Dr. Maria O'Sullivan

• Tara Raftery, Adrian Martineau, Claire Greiller, Subrata Ghosh, Deirdre McNamara, Kathleen Bennett, Jon Meddings, Maria O Sullivan, Effects of vitamin D supplementation on intestinal permeability, cathelicidin and disease markers in Crohn's disease: Results from a randomised double-blind placebo-controlled study., United European Gastroenterology Journal, 3, (3), 2015, p294 - 302Journal Article, 2015, TARA - Full Text
• Raftery T, Merrick M, Healy M, Mahmud N, O'Morain C, Smith S, McNamara D, O'Sullivan M., Vitamin D Status Is Associated with Intestinal Inflammation as Measured by Fecal Calprotectin in Crohn's Disease in Clinical Remission., Digestive Diseases and Sciences, 60, (8), 2015, p2427 - 2435Journal Article, 2015, DOI
• Maria O Sullivan, Does vitamin D protect the gut mucosal barrier? Mechanistic insights from experimental colitis., Dg Dis Sci, 60, (7), 2015, p1871 - 1872Journal Article, 2015
• O'Donnell S, O'Sullivan M, O'Morain C.A, Ryan B.M, The clinical significance of antimicrobial serologic responses within an Irish Crohn's disease population, European Journal of Gastroenterology and Hepatology, 25, (12), 2013, p1464 - 1469Journal Article, 2013, DOI , URL
• O'Donnell S, Crotty P.L, O'Sullivan M, Breslin N, O'Connor H.J, O'Morain C.A, Ryan B.M, Isolated active ileitis: Is it a mild subtype of Crohn's disease?, Inflammatory Bowel Diseases, 19, (9), 2013, p1815 - 1822Journal Article, 2013, DOI , URL
• M O'Sullivan, C O'Morain., Nutrition in Inflammatory Bowel Disease, Current Treatment Options in Gastroenterology , 7, (3), 2004, p191 - 198Journal Article, 2004
• ID Arnott, ER Nimmo, HE Drummond, J Fennell, BR Smith, E MacKinlay, J Morecroft, N Anderson, D Kelleher, M O'Sullivan, R McManus, J Satsangi, NOD2/CARD15, TLR4 and CD14 mutations in Scottish and Irish Crohn's disease patients: Evidence for genetic heterogeneity within Europe? , Genes and Immunity, 5, 2004, p417 - 425Journal Article, 2004
• M O'Sullivan, C O'Morain, Food Intolerance: Dietary Treatments in Functional Bowel Disorders, Current Treatment Options in Gastroenterology , 6, (4), 2003, p339 - 345Journal Article, 2003
• M O Sullivan, N Clayton, NP Breslin, I Harman, C Bountra, A McLaren, CA O Morain, Increased mast cells in the irritable bowel syndrome, Neurogastroenterology & Motility, 12, (5), 2000, p449 - 457Journal Article, 2000
• M O Sullivan, CA O Morain, Bacterial supplementation in the irritable bowel syndrome - a randomised double blind placebo-controlled crossover study, Digestive & Liver Diseases, 32, 2000, p294 - 301Journal Article, 2000
• Maria O'Sullivan, Is vitamin D supplementation a viable treatment for Crohn's disease?, Expert Rev Gastroenterol Hepatol, 10, (1), 2016, p1 - 4Journal Article, 2016
• Raftery T, O'Sullivan M, Optimal vitamin D levels in Crohn's disease: a review., The Proceedings of the Nutrition Society, 74, (1), 2015, p56-66Journal Article, 2015, DOI , TARA - Full Text
• O'Sullivan M, Vitamin D as a novel therapy in inflammatory bowel disease: new hope or false dawn?, The Proceedings of the Nutrition Society, 74, (1), 2015, p5-12Journal Article, 2015, DOI , TARA - Full Text
• M O Sullivan, C O Morain, Patient knowledge in inflammatory bowel disease, American Journal of Gastroenterology, 95, (8), 2000, p2128 - 2129Journal Article, 2000
• M O Sullivan, E Lovett, N Mahmud, CA O Morain, Educational needs and patient knowledge in patients with irritable bowel syndrome, European Journal of Gastroenterology & Hepatology, 11, 2000, p1 - 5Journal Article, 2000
• D Mc Namara, W Hall, M O'Sullivan, C O'Morain C. , Altered cardia epithelial cell kinetics induced by Helicobacter pylori infection and gastro-oesophageal reflux disease: possible malignant potential? , European Journal of Gastroenterology & Hepatology, 15, (7), 2003, p767 - 772Journal Article, 2003
• Q Dong, M O'Sullivan, W Hall, C Herra, C Kean, C O'Morain, M Buckley, 11. Identification of a new segment involved in cagA 3' region variation of Helicobacter pylori, FEMS Immunol Med Microbiol, 33, (1), 2002, p51 - 55Journal Article, 2002
• D McNamara D, M Buckley, P Crotty, W Hall, M O'Sullivan, C O'Morain, Carditis: all Helicobacter pylori or is there a role for gastro-oesophageal reflux? , Scandinavian Journal of Gastroenterology , 37, 2002, p772 - 777Journal Article, 2002
• M O'Sullivan, C O'Morain, Nutritional treatments in inflammatory bowel disease, Current Treatment Options in Gastroenterology , 4, 2001, p207 - 213.Journal Article, 2001
• M O'Sullivan, C O'Morain, Liquid diets for Crohn's disease, Gut , 48, (6), 2001, p757. - 757Journal Article, 2001
• A Qasim, H O'Brien, S Sebastian S, M O'Sullivan, M Buckley, C O Morain, Platelet activation in patients with irritable bowel syndrome may reflect a subclinical inflammatory response, Gut, 52, (12), 2003, p1799 - 1800Journal Article, 2003
• MA O Sullivan, CA O Morain, Nutritional therapy in Crohn's disease, Inflammatory Bowel Disease, 4, (1), 1998, p45 - 53Journal Article, 1998
• C O Morain, M O Sullivan, The role of nutrition in liver disease, Irish Medical Journal, 89, 1996, p208 - 209Journal Article, 1996
• O'Morain C, O'Sullivan M,, Nutritional support in Crohn's disease - current status and future directions., J Gastroenterol, 30, 1995, p102 - 107Journal Article, 1995
• Are we able to treat Inflammatory Bowel Disease with diet? in, editor(s)Vucelic B, Colombel JF, Grasche C, Scholmerich J , IBD: translation from basic research to clinical practice (Falk symposium 140)., UK, Kluwer Academic Publishers, 2005, pp138 - 146, [T Nic Suibhne, CA O Morain, M O Sullivan]Book Chapter, 2005
• Diet in Crohn's disease in, editor(s)T Shimoyama, A Axon, A Lee, DK Podolsky, C O Morain , In Helicobacter meets inflammatory bowel disease, Tokyo, Japan, Medical Tribune Inc., 2002, pp453 - 467, [MA O Sullivan, CA O Morain, JM Buckley]Book Chapter, 2002
• Nutrition in Inflammatory Bowel Disease in, editor(s)Scholmerich, Goebell, Andus, Layer , Inflammatory Bowel Disease - from bench bedside, Kluwer, 1997, pp303 - 312, [C O Morain, M O Sullivan]Book Chapter, 1997
• Dietary manipulations - elemental and enteral in, editor(s)Allan , Inflammatory Bowel Diseases 3rd Edition, Churchill Livingstone, 1996, pp535 - 539, [C O Morain, M O Sullivan.]Book Chapter, 1996
• A Baxendale,C Bountra, N Clayton, D Gunput, PPA Humphrey, K Kozlowski, A Mangel, M O Sullivan., Irritable bowel syndrome as visceral hyperalgesia: implications for therapy., Current Opinions in central & peripheral nervous system investigational drugs, 1, (1), 1999, p86 - 97Journal Article, 1999
• Aspell N, Lawlor B, O'Sullivan M, Is there a role for vitamin D in supporting cognitive function as we age? 2018;77:124-134., Proc Nutr Soc., 77, 2018, p124 - 134Journal Article, 2018, URL
• Kelly S, O'Brien I , Smuts K, O'Sullivan M, Warters A., Prevalence of frailty among community dwelling older adults in receipt of low level home support: a cross-sectional analysis of the North Dublin Cohort., BMC Geriatr. , 17, (121), 2017, p1 - 11Journal Article, 2017, TARA - Full Text
• Boland K, Maher N, O'Hanlon C, O'Sullivan M, Rice N, Smyth M, Reynolds JV, Home enteral nutrition recipients: patient perspectives on training, complications and satisfaction., Frontline Gastroenterol. , 8, (1), 2017, p79 - 84Journal Article, 2017, TARA - Full Text
• I. O'Brien, K. Smuts, C. W. Fan, M.O'Sullivan, A. Warters., High prevalence of dementia among community dwelling older adults in receipt of state funded home care packages: implications for health care planning, Irish Journal of Psychological Medicine, E-pub, 2017, p1 - 6Journal Article, 2017, TARA - Full Text
• O'Sullivan F, Raftery T, van Weele M, van Geffen J, McNamara D, O'Morain C, Mahmud N, Kelly D, Healy M, O'Sullivan M, Zgaga L., Sunshine is an important determinant of vitamin D status even among high-dose supplement users: secondary analysis of a randomised controlled trial in Crohn's disease patients., Photochemistry and Photobiology, 95, (4), 2019, p1060 - 1067Journal Article, 2019, DOI
• O'Donnell, Sarah, O'Sullivan, Maria, Breslin, Niall, O'Connor, Humphrey J., O'Morain, Colm A., Crotty, Paul L., Ryan, Barbara M., Isolated Active Ileitis: Serological and Genetic Profile, 140, (5), 2011, ppS-1Conference Paper, 2011, DOI
• Anwar, M, O'Sullivan, M, Sarwar, S, Ryan, B, Breslin, N, O'Connor, H, O'Morain, C, Adalimumab in the Management of Crohn's Disease (CD) Patients with a Loss of Response to Infliximab, 38, (11), 2006Conference Paper, 2006, DOI
• O'Donnell, Sarah, O'Sullivan, Maria, Breslin, Niall, Qasim, Asghar, O'Morain, Colm A., Ryan, Barbara M., M1102 ANCA, ASCA, Anti-OmpC and Anti-Cbir Antibodies Within An Irish Crohns Disease Cohort, 136, (5), 2009, ppA-350Conference Paper, 2009, DOI
• M. A. O'Sullivan, N. Mahmud, D. P. Kelleher, E. Lovett and C. A. O'Morain, Patient knowledge and educational needs in irritable bowel syndrome, European journal of gastroenterology & hepatology, 12, (1), 2000, p39-43Journal Article, 2000, URL
• Lauren Swan, Maria O Sullivan, Austin Warters, Kate Irving, Socioeconomic and social factors among community-dwelling dependent older people with cognitive impairment in Ireland, 48, 2019, ppiii1 - iii16Conference Paper, 2019
• Horgan NF, Cummins V, Doyle F, O'Sullivan M, Galvin R, Burton E, Sorensen J, Skelton DA, Townley B, Rooney D, Jackson G, Swan L, Warters A., Enhancing existing formal home care to improve and maintain functional status in older adults: Protocol for a feasibility study on the implementation of the Care to Move (CTM) programme in an Irish healthcare setting., J Frailty Sarcopenia Falls, 5, (1), 2020, p10-16Journal Article, 2020, DOI
• L Swan, A Warters, M O Sullivan, Socioeconomic Inequality Is A Determinant Of Probable Sarcopenia In Community dwelling Older Adults., ESPEN, Sept,, 2020Conference Paper, 2020
• Aspell N, Laird E, Healy M, Lawlor B, O'Sullivan M., Vitamin D Deficiency Is Associated With Impaired Muscle Strength And Physical Performance In Community-Dwelling Older Adults: Findings From The English Longitudinal Study Of Ageing., Clinical interventions in aging, 14, 2019, p1751-1761Journal Article, 2019, DOI
• Aspell N, Laird E, Healy M, Shannon T, Lawlor B, O'Sullivan M., The Prevalence and Determinants of Vitamin D Status in Community-Dwelling Older Adults: Results from the English Longitudinal Study of Ageing (ELSA)., Nutrients, 11, (6), 2019Journal Article, 2019, DOI
• Laird E, Walsh J.B, Lanham-New S, O'Sullivan M, Kenny R.A., Scully H,Crowley V, Healy M., A High Prevalence of Vitamin D Deficiency Observed in an Irish South East Asian Population: A Cross-sectional Observation Study, Nutrients, 12, (12), 2020, p1-9Journal Article, 2020, DOI , TARA - Full Text
• Swan, Lauren, Warters, Austin, O'Sullivan, Maria, Socioeconomic Inequality and Risk of Sarcopenia in Community-Dwelling Older Adults, Clinical Interventions in Aging, Volume 16, 2021, p1119-1129Journal Article, 2021, DOI
• Aspell, Niamh, O'Sullivan, Maria, O'Shea, Eamon, Irving, Kate, Duffy, Chloe, Gorman, Rebecca, Warters, Austin, Predicting admission to long-term care and mortality among community-based, dependent older people in Ireland, International Journal of Geriatric Psychiatry, 34, (7), 2019, p999-1007Journal Article, 2019, DOI
• Swan, Lauren, Horgan, N Frances, Cummins, Vanda, Burton, Elissa, Galvin, Rose, Skelton, Dawn A, Townley, Bex, Doyle, Frank, Jabakhanji, Samira, Sorensen, Jan, Rooney, Debbie, Murphy, Lisa, Warters, Austin, O'Sullivan, Maria, Embedding Physical Activity Within Community Home Support Services for Older Adults in Ireland - A Qualitative Study of Barriers and Enablers, Clinical Interventions in Aging, Volume 17, 2022, p223-234Journal Article, 2022, DOI
• Lauren Swan, Austin Warters, Maria O Sullivan, Socioeconomic Disadvantage is Associated with Probable Sarcopenia in Community-dwelling Older Adults: Findings from the English Longitudinal Study of Ageing. DOI https://doi.org/10.2147/JMDH.S380456, The Journal of Frailty & Aging, 2022, p10.14283/jfa.2022.32Journal Article, 2022
• Lauren Swan, N Frances Horgan, Chie Wei Fan, Austin Warters, Maria O Sullivan., Residential area socioeconomic deprivation is associated with physical dependency and polypharmacy in community-dwelling older adults: an analysis of health administrative data in Ireland, Journal of Multidisciplinary Healthcare DOI: 10.2147/JMDH.S380456, 15, 2022, 1, p9Journal Article, 2022
• Swan, Lauren, Martin, Niamh, Horgan, N Frances, Warters, Austin, O Sullivan, Maria, Assessing Sarcopenia, Frailty, and Malnutrition in Community-Dwelling Dependant Older Adults - An Exploratory Home-Based Study of an Underserved Group in Research, International Journal of Environmental Research and Public Health, 19, (23), 2022, p16133Journal Article, 2022, DOI
• Curtis, Molly, Swan, Lauren, Fox, Rebecca, Warters, Austin, O Sullivan, Maria, Associations between Body Mass Index and Probable Sarcopenia in Community-Dwelling Older Adults, Nutrients, 15, (6), 2023, p1505Journal Article, 2023, DOI
• Burton, Elissa, Horgan, N Frances, Cummins, Vanda, Warters, Austin, Swan, Lauren, O'Sullivan, Maria, Skelton, Dawn A, Townley, Bex, Doyle, Frank, Jabakhanji, Samira, Sorensen, Jan, Rooney, Debbie, Murphy, Lisa, Galvin, Rose, A Qualitative Study of Older Adults" Experiences of Embedding Physical Activity Within Their Home Care Services in Ireland, Journal of Multidisciplinary Healthcare, Volume 15, 2022, p1163-1173Journal Article, 2022, DOI
• Horgan, Frances, Cummins, Vanda, Skelton, Dawn A., Doyle, Frank, O Sullivan, Maria, Galvin, Rose, Burton, Elissa, Sorensen, Jan, Jabakhanji, Samira Barbara, Townley, Bex, Rooney, Debbie, Jackson, Gill, Murphy, Lisa, Swan, Lauren, O Neill, Mary, Warters, Austin, Enhancing Existing Formal Home Care to Improve and Maintain Functional Status in Older Adults: Results of a Feasibility Study on the Implementation of Care to Move (CTM) in an Irish Healthcare Setting, International Journal of Environmental Research and Public Health, 19, (18), 2022, p11148Journal Article, 2022, DOI
• Kelly P, Suibhne TN, O'Morain C, O'Sullivan M, Vitamin D status and cytokine levels in patients with Crohn's disease., International journal for vitamin and nutrition research., 81, 2011, p205 - 210Journal Article, 2011, DOI
• O'Sullivan M, Symposium on 'The challenge of translating nutrition research into public health nutrition'. Session 3: Joint Nutrition Society and Irish Nutrition and Dietetic Institute Symposium on 'Nutrition and autoimmune disease'. Nutrition in Crohn's disease., The Proceedings of the Nutrition Society, 2009Journal Article, 2009, DOI
• Dong Q, O'Sullivan M, Hall W, Herra C, Kean C, O'Morain C, Buckley M, Identification of a new segment involved in cagA 3' region variation of Helicobacter pylori., FEMS immunology and medical microbiology, 2002Journal Article, 2002, DOI
• , 5th United European Gastroenterology Week. Paris, France, 2-6 November 1996. Abstracts., Gut, 1996Journal Article, 1996
• O'Morain C, O'Sullivan M, Nutritional support in Crohn's disease: current status and future directions., Journal of gastroenterology, 1995Journal Article, 1995
• , National Scientific Medical Meeting. 31 March-1 April 1995. Abstracts., Irish journal of medical science, 1995Journal Article, 1995, DOI
• , Irish Society of Gastroenterology : Proceedings for summer meeting " 26th/27th May 1995 in Galway, Irish journal of medical science, 1995Journal Article, 1995
• O'Sullivan M, Irish Society of Gastroenterology : Proceedings of winter meeting held in Dublin on 25th/26th November 1994., 1994Conference Paper, 1994
• Lauren Power, Deirdre Mullally, Eileen Gibney, Michelle Clarke, Marjolein Visser, Dorothee Volkert, Laura Bardon, Marian A.E. de van der Schueren, Clare A. Corish, MaNuEL Consortium, M O'Sullivan, MaNuEL Consortium, A review of the validity of malnutrition screening tools used in older adults in community and healthcare settings - A MaNuEL study, Clinical Nutrition ESPEN, 24, 2018, p1--13Journal Article, 2018, DOI
• O'Sullivan, M and Clayton, Nick and Wong, Tony and Bountra, Chas and Buckley, M and O'Morain, C, Increased iNOS and nitrotyrosine expression in irritable bowel syndrome (IBS)., Gastroenterology, 118, (4), 2000Journal Article, 2000
• O'Sullivan, M and Breslin, N and Harman, I and Clayton, N and Bountra, C and McLaren, A and O'Morain, C, Increased mucosal mast cells in irritable bowel syndrome (IBS)., Gastroenterology, 114, (4), 1998Journal Article, 1998
• OSullivan, M and Mahmud, N and Lovett, E and Kelleher, D and OMorain, CA, Impaired quality of life in irritable bowel syndrome as compared to organic bowel disease., Gastroenterology, 112, (4), 1997, ppA801--A801Conference Paper, 1997
• O'Sullivan, Maria and Clayton, Nick and Moloney, Gerry and Bountra, Chas and Crotty, Paul and Buckley, Martin and O'Connor, Humphrey and O'Morain, Colm, Increased iNOS expression in irritable bowel syndrome (IBS) patients with stress related symptoms, 2003Journal Article, 2003
• OSullivan, M and OMorain, C, Probiotics in the treatment of Irritable Bowel Syndrome (IBS)-A randomised double blind placebo controlled crossover study, Gastroenterology, 110, (4), 1996, ppA727--A727Conference Paper, 1996
• O Sullivan, M and Clayton, N and Wong, T et al, Increased CD3 lymphocytes and inos: further evidence of an inflammatory response in irritable bowel syndrome, 47, (Suppl 3), 2000, ppA50Conference Paper, 2000
• Anwar, Malik and O'Sullivan, Maria and Ryan, Barbara and Breslin, Niall and O'Connor, Humphrey and O'Morain, Colm, An open label study of adalimumab in Crohn's disease patients with a loss of response to infliximab, Gastroenterology, 130, (4), 2006, ppA662--A662Conference Paper, 2006
• O Sullivan, M and Clayton, N and Wong, T et al, Increased CD3 lymphocytes and inos: further evidence of an inflammatory response in irritable bowelsyndrome, 47, (Suppl 3), 2000, ppA50Conference Paper, 2000
• Nic-Suibhne, T and O'Morain, C and O'Sullivan, M, Protein undernutrition in Crohn's disease: an unrecognised problem?, Gastroenterology, 128, (4), 2005, ppA312--A312Conference Paper, 2005
• Raftery, T and Martineau, A and Greiller, C and Lee, CS and McNamara, D and Ghosh, S and Meddings, J and O'sullivan, M, Does vitamin D supplementation impact plasma cathelicidin, human beta defensin 2 and intestinal permeability in stable Crohn's disease?--Results from a randomised, double blind placebo controlled study, Proceedings of the Nutrition Society, 72, (OCE3), 2013, pE176Journal Article, 2013
• Raftery, T and Lee, CS and Cox, G and McNamara, D and Healy, M and O'Sullivan, M, Supplemental vitamin D in quiescent Crohn's disease--effects on quality of life, fatigue and muscle strength: results from a double blind placebo controlled study, 72, (OCE3), 2013, ppE177Conference Paper, 2013
• Aspell, N and Healy, M and Mc Partlin, J and Lawlor, BA and O'Sullivan, M, Effects of vitamin D supplementation on cognitive function in healthy, community dwelling older adults: Results from a randomised double-blind placebo-controlled pilot trial, Proceedings of the Nutrition Society, 76, (OCE3), 2017, pE59Journal Article, 2017
• Kelly, Michelle E and O'Sullivan, Maria, Strategies and techniques for cognitive rehabilitation, Manual for healthcare professionals working with individuals with cognitive impairment, 2015, p1--24Journal Article, 2015
• O'Sullivan, K and O'Sullivan, M and Quigley, S Delahunt, A , Sugrue, S, Dietitians attitudes and experiences of blended tube feeding in paediatrics, 2019Journal Article, 2019
• O'Sullivan, M and Mahmud, N and Kelleher, D and Lovett, E and O'Morain, CA, Educational needs in patients with irritable bowel syndrome (IBS): Implications for clinical management, (114), 1998, ppA816Conference Paper, 1998
• OSullivan, M and Mahmud, N and Lovett, E and Kelleher, D and OMorain, CA, Quality of life in inflammatory bowel disease (IBD)-What are we measuring?, Gastroenterology, 112, (4), 1997, ppA1058--A1058Conference Paper, 1997
• Nic-Suibhne, T and O'Morain, CA and O'Sullivan, M, Undernutrition and Reduced Muscle Funcion Is Common in Young Patients with Crohns Disease (CD), 38, (11), 2006, ppPoster\_40Conference Paper, 2006
• Nic-Suibhne, T and O'Morain, C and O'Sullivan, M, P042 HIGH PREVALENCE OF VITAMIN D DEFICIENCY IN CROHN'S DISEASE IN WINTERTIME: SPECTRUM OF A WIDER PUBLIC HEALTH PROBLEM?, 1, (2), 2008, pp18Conference Paper, 2008
• Shuhaibar, M and Suibhne, T Nic and O'Morain, C and O'Sullivan, M, P076 ROLE OF INCREASING BODY MASS INDEX IN ADULTS WITH QUIESCENT CROHN'S DISEASE, 1, (2), 2008, pp28Conference Paper, 2008
• Wilcz, Ewa and O'Morain, Colm A and McClean, Siobhan and O'Sullivan, Maria, T2069 Effects of Tryptase and Mast Cells on Intestinal Permeability and Tight Junction Proteins: Implications for the Pathogenesis for Irritable Bowel Syndrome (IBS), 5, (138), 2010, ppS--625Conference Paper, 2010
• Moloney, G and Clayton, N and Bountra, C and Crotty, P and O'Morain, C and O'Sullivan, M, Increased inflammatory mediators in irritable bowel syndrome (IBS), Endoscopy, 37, (05), 2005, p10Journal Article, 2005
• Saleem, A and O'Connor, H and O'Regan, P and O'Morain, C and O'Sullivan, M, P109 CIGARETTE SMOKING, DISEASE LOCATION AND SEVERITY IN CROHN'S DISEASE, 1, (2), 2008, pp38Conference Paper, 2008
• Nami, A and O'Sullivan, M and O'Connor, H and O'Morain, C, helicobacter pylori cagA, cagE and BabA2 genotypes in patients with intestinal metaplasia and gastritis, 37, (12), 2005, ppA24Conference Paper, 2005
• Nic Suibhne, T and O'Morain, CA and O'Sullivan, M, Calcium intake in crohn's disease (CD): Are we meeting the nutritional guidelines?, Endoscopy, 37, (05), 2005, p45Journal Article, 2005
• Nami, A and Dowling, P and O'Sullivan, M and O'Connor, H and O'Morain, C, The plasticity region locus JHP947 is a pathogenicity marker found in Helicobacter pylori-associated gastric intestinal metaplasia, Endoscopy, 37, (05), 2005, p22Journal Article, 2005
• Dring, Megan and Mahmud, Nassir and O'Sullivan, Maria and O'Morain, Colm and Farrell, Richard and Goulding, Carol and Kellehor, Dermot and McManus, Ross, Multiple drug resistance gene (MDRI) polymorphisms and steroid resistance in inflammatory bowel disease (IBD), 4, (124), 2003, ppA375Conference Paper, 2003
• Nic Suibhne, T and O'Morain, CA and O'Sullivan, M, High Prevalence of Vitamin D Insufficiency in Inactive Crohn's Disease (CD), Endoscopy, 38, (11), 2006, pOral\_24Journal Article, 2006
• O'Sullivan, MA and Mahmud, N and Lovett, E and Kelleher, D and O'Morain, CA, The role of non-colonic symptoms in the irritable bowel syndrome (IBS), GASTROENTEROLOGY, 116, (4), 1999, ppA1052--A1052Conference Paper, 1999
• O'Sullivan, M and Clayton, Nick and Hurle, Mick and Bountra, C and Buckley, Martin and O'Morain, C, Activation of nuclear factor-kappa B (NF-kappa B) in diarrhoea predominant irritable bowel syndrome, 120, (5), 2001Conference Paper, 2001
• Nic Suibhne, T and O'Morain, C and O'Sullivan, M, Protein malnutrition in inflammatory bowel disease--An unrecognised problem?, 37, (05), 2005, pp37Conference Paper, 2005
• O'Sullivan, Maria and Raftery, Tara and Suibhne, Treasa Nic, Reply to Dr. Yamamoto et al.'s letter, Journal of Crohn's and Colitis, 7, (5), 2013, pe193--e193Journal Article, 2013
• Raftery, Tara C and Martineau, Adrian and Greiller, Claire and Lee, Chun Seng and McNamara, Deirdre and Ghosh, Subrata and Meddings, Jon and O'Sullivan, Maria, Sa1197 Effects of Vitamin D Supplementation on Intestinal Permeability, Plasma Cathelicidin and Human Beta-Defensin-2 in Crohn's Disease: Results From a Randomised Double-Blind Placebo-Controlled Study, 5, (144), 2013, ppS--226Conference Paper, 2013
• Nic-Suibhne, T and Healy, Martin and Cox, G and Crowley, V and Egan, B and O'morain, C and O'sullivan, Maria, High risk of vitamin D deficiency in wintertime in adults with Crohn's disease, Gastroenterology, 132, (4), 2007, ppA662--A662Conference Paper, 2007
• Nic Suibhne, T. and Shuhaibar, M and O Morain, C and O Sullivan, Maria, Lifestyle patterns in people with quiescent Crohn's disease: A role for health promotion?, GASTROENTEROLOGY, 132, (4), 2007, ppA512--A512Conference Paper, 2007
• Nic Suibhne, Treasa and O'Morain, Cohn and O'Sullivan, Maria, High prevalence of vitamin D deficiency in patients with inactive Crohn's disease, GASTROENTEROLOGY, 130, (4), 2006, ppA604--A604Conference Paper, 2006
• Nami, A and Taneike, I and O'Sullivan, M and Fitzgerald, T and Crotty, P and O'Connor, H and O'Morain, C, Virulence factors in an Irish Helicobacter pylori isolate from intestinal metaplasia, HELICOBACTER, 12, (4), 2007, pp415--416Conference Paper, 2007
• O'Sullivan, M and Breslin, N and Harman, I and Clayton, N and Bountra, C and McLaren, A and O'Morain, C, Increased mucosal mast cells-Evidence of an inflammatory response in IBS?, Gut, 44, 1999Journal Article, 1999
• Nic Suibhne, Treasa and O'Morain, Colm and O'Sullivan, Maria, Reduced muscle function and muscle stores are common in quiescent Crohn's disease, Gastroenterology, 130, (4), 2006, ppA611--A611Conference Paper, 2006
• O'Sullivan, Maria and Raftery, Tara, Inflammatory bowel disease dietary management, Advanced Nutrition and Dietetics in Gastroenterology, 2014, p191--201Journal Article, 2014
• Murphy, T and O'Sullivan, M and Buckley, M and O'Sullivan, G, First Description of Retrograde Balloon Dilatation of the Cardia of Achalasia Using the Retroflexed Gastroscope--Technique and Early Clinical Experience, 38, (11), 2006, pp35Conference Paper, 2006
• Clarke, G and Ryan, E and O†Keane, JC and Crowe, J and McMathuna, P and Moriarty, D and Ettarh, R and Sheahan, K and Hyland, J and O†Donoghue, DP and others, Irish society of gastroenterology: Proceedings of Winter Meeting held Friday 21st and Saturday 22nd November, 1997, Irish Journal of Medical Science, 167, 1998, p2--23Journal Article, 1998
• Keane, F and O'Malley, A and Casey, A and O'Flynn, K and Sugrue, S and McDermott, M and O'Sullivan, M and Raftery, T and Mahony, M and Quinn, S and others, PAEDIATRIC EOSINOPHILIC OESOPHAGITIS IN IRELAND: A 10 YEAR REVIEW OF PRESENTING SYMPTOMS, PHENOTYPE AND MANAGEMENT AT DIAGNOSIS, IRISH JOURNAL OF MEDICAL SCIENCE, 186, 2017, ppS24--S24Conference Paper, 2017
• O'Sullivan, Maria A, The Irritable Bowel Syndrome: Studies in a Hospital Based Population, 1999Thesis, 1999
• Boland, K and Maher, N and O'Hanlon, C and O'Sullivan, M and Smyth, M and Reynolds, JV, Patients using home enteral nutrition in Ireland: Training, complications and satisfaction, Clinical nutrition ESPEN, 22, 2017, p121Journal Article, 2017
• Duggan, SN and Smyth, ND and O Sullivan, M and Feehan, S and Ridgway, PF and Conlon, KC, A transatlantic survey of nutrition practice in, J Hum Nutr Diet, 25, (4), 2012, p388 - 397Journal Article, 2012
• Swan, Lauren and O'Sullivan, Maria and Warters, Austin and Irving, Kate, 236 Socioeconomic and Social Factors among Community-Dwelling Dependent Older People with Cognitive Impairment in Ireland., Age \& Ageing, 48, 2019Journal Article, 2019
• Swan, L and Horgan, F and Cummins, V and Doyle, F and Galvin, R and Burton, E and Sorensen, J and Jabakhanji, SB and Skelton, D and Townley, B and others, 199 EMBEDDING PHYSICAL ACTIVITY WITHIN HOME CARE SERVICES FOR OLDER ADULTS IN IRELAND - A QUALITATIVE STUDY OF BARRIERS AND FACILITATORS, 50, (Supplement\_3), 2021, ppi1--i8Conference Paper, 2021
• Galvin, R, Burton, E, Cummins, V , O'Sullivan M, Swan, L, Doyle, F, Sorensen J, Skelton, DA, Townley B, Rooney D. et al, 255 A QUALITATIVE STUDY OF OLDER ADULTS' EXPERIENCES OF EMBEDDING PHYSICAL ACTIVITY WITHIN THEIR HOME CARE SERVICES, 50, (Supplement\_3), 2021, ppii9--ii41Conference Paper, 2021
• Swan, L and Martin, N and Warters, A and O'Sullivan, M, 21 ASSESSING SARCOPENIA, FRAILTY AND MALNUTRITION IN COMMUNITY-DWELLING DEPENDANT OLDER ADULTS--A HOME-BASED STUDY WITH AN UNDERREPRESENTED GROUP IN RESEARCH, 51, (Supplement\_3), 2022, ppafac218--016Conference Paper, 2022
• O'Sullivan, M and Moran, C and Griffin, T and Doheny, H and Doyle, S and McCartney, D and O'Shea, PM, Sex, sunshine and sample-origin-predictors of emerging spring and summertime vitamin D deficiency trends amongst Irish adults during the Covid-19 lockdown, IRISH JOURNAL OF MEDICAL SCIENCE, 191, (SUPPL 4), 2022, pp127--127Conference Paper, 2022
• G Landers, D Mockler, A Ciblis, A Warters, M O'Sullivan, Nutritional Interventions for Sarcopenia in Socioeconomically Disadvantaged Older Populations-a Scoping Review of the Evidence., Open Science Framework, (https://osf.io/gtke6), 2023Journal Article, 2023
• Q Dong, M O'Sullivan, A Nami, P Dowling, G Murphy ,M Buckley, C O'Morain., 1. A genetic locus of Helicobacter pylori inversely associated with gastric intestinal metaplasia, FEMS Immunol Med Microbiol , 44, (2), 2005, p243 - 249Journal Article, 2005
• Dring MM, Goulding CA, Trimble VI, Keegan D, Ryan AW, Brophy KM, Smyth CM, Keeling PW, O'Donoghue D, O'Sullivan M, O'Morain C, Mahmud N, Wikstrom AC, Kelleher D, McManus R, The pregnane X receptor locus is associated with susceptibility to inflammatory bowel disease, Gastroenterology, 130, (2), 2006, p341 - 348Journal Article, 2006
• Nami A, Dowling P, O'Sullivan M, Swan N, Crotty P, Breslin N, Ryan B, O'Connor H, O'Morain C, Virulent Helicobacter pylori associated with gastric intestinal metaplasia assessed in archived gastric tissue, HELICOBACTER, 10, (5), 2005, pp478 - 478Conference Paper, 2005
• M O'Sullivan, C O'Morain, Nutrition in Inflammatory bowel disease, Best Practice & Research Clinical Gastroenterology , 20 , 2006, p561 - 573Journal Article, 2006
• Dong Q, O'Sullivan M, Nami A, Dowling P, Murphy G, Buckley M, O'Morain C., A genetic locus of Helicobacter pylori inversely associated with gastric intestinal metaplasia, Immunology and Medical Microbiology, (44(2)), 2005, p243-9.Journal Article, 2005
• O'Sullivan M, Nic Suibhne T, Cox G, Healy M, O'Morain C, High prevalence of vitamin D insufficiency in healthy Irish adults, Irish Journal of Medical Science, Feb 15, (PMID: 18274816), 2008Journal Article, 2008
• Maria O'Sullivan, Joint Nutrition Society and Irish Nutrition and Dietetic Institute Symposium on Nutrition and autoimmune disease' Nutrition in Crohn's disease, Proceedings of the Nutrition Society, 68, (2), 2009, p1 - 8Journal Article, 2009, TARA - Full Text
• Murphy, G, Thornton, J, McManus, R, Swan, N, Ryan, B, Hughes, DJ, O'Morain, CA, O'Sullivan, M, Association of gastric disease with polymorphisms in the inflammatory-related genes IL-1B, IL-1RN, IL-10, TNF and TLR4., European journal of gastroenterology & hepatology, 21, (6), 2009, p630 - 635Journal Article, 2009, DOI
• Hughes DJ, McManus R, Neary P, O'Morain C, O'Sullivan M , Common Variation in the Vitamin D Receptor Gene and Risk of Inflammatory Bowel Disease in an Irish Case-Control Study, Eur J Gastroenterol Hepatol, 23, (9), 2011, p807 - 812Journal Article, 2011
• Maria O'Sullivan, Therapeutic potential of ketotifen in Irritable Bowel Syndrome (IBS) may involve changes in mast cells at sites beyond the rectum, Gut, 60, (3), 2011, p423 - 423Journal Article, 2011
• Duggan S, O'Sullivan M, Feehan S, Ridgway P, Conlon K, Nutrition treatment of deficiency and malnutrition in chronic pancreatitis: a review., Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition, 25, (4), 2010, p362-70Journal Article, 2010, DOI
• O'Donnell S, Murphy S, Anwar MM, O'Sullivan M, Breslin N, O'Connor HJ, Ryan BM, O'Morain CA, Safety of infliximab in 10 years of clinical practice., Eur J Gastroenterol Hepatol, 23, (7), 2011, p603 - 606Journal Article, 2011, DOI
• Tara Raftery, Maria O'Sullivan, Risk Factors for Cardiovascular Events in Inflammatory Bowel Disease. , American Journal of Gastroenterology , 106, (11), 2011, p2042 - 2042Journal Article, 2011, DOI
• Nic Suibhne T, Cox G, Healy M, O Morain C, O Sullivan M, Vitamin D deficiency in Crohns disease: Prevalence, risk factors and supplement use in an outpatient setting., Journal of Crohns & Colitis, 6, (2), 2012, p182-8Journal Article, 2012, DOI
• Ewa Wilcz , Colm O'Morain, Siobhan McClean, Maria O'Sullivan, Effects of Tryptase and Mast cells on Intestinal Permeability and Tight Junction Proteins: implications for the pathogenesis of IBS, Gastroenterology , American Gastroenterology Association meeting, Digestive Disease Week, New Orleans, USA, May 2010, 138, 2010, ppS-625 - S-625Conference Paper, 2010
• Ewa Wilcz, Siobhan McClean, Maria O'Sullivan, Mast cell Tryptase Alters Intestinal Permeability and Tight Junction Proteins: Implications for the Pathogenesis of IBS, Endoscopy, United European Gastroenterology Week (UEGW), Barcelona, Spain., October 2010, 2010, ppM1124 - M1124Conference Paper, 2010
• E Wilcz, S McClean, M O Sullivan, Mast Cell Tryptase Reduces Junctional Adhesion Molecule-A (JAM-A) Expression in Human Intestinal Epithelial Cells: Implications for the Mechanisms of Barrier Dysfunction in Irritable Bowel Syndrome (IBS), Gastroenterology, American Gastroenterological Association, Digestive Disease Week, Chicago, USA, May 2011, 140, (5), 2011, ppS-504 - S-504Conference Paper, 2011
• Sarah O'Donnell, Maria O'Sullivan, Niall Breslin, Humphrey J O'Connor, Colm A. O'Morain, Paul L. Crotty, Barbara M. Ryan, 53. Isolated Active Ileitis: Serological and Genetic Profile, Gastroenterology, American Gastroenterological Association, Digestive Disease Week, Chicago, 2011, May 2011, 140, 2011, ppS-1 - S-1Conference Paper, 2011
• Raftery T, O'Morain C, O'Sullivan M., Vitamin D: New Roles and Therapeutic Potential in Inflammatory Bowel Disease., Current Drug Metabolism, 13, (9), 2012, p1294 - 1302Journal Article, 2012
• Montague S, Carney A, McNamara D, Kennedy M, O'Sullivan M, Buckley M, O'Morain C., An audit of anti TNF alpha therapy in Irish Crohn's patients, GUT, United European Gastroenterology Week, Ireland, 2000, 46, (2), 2000, ppA10-Conference Paper, 2000
• E Wilcz,, S McClean, M O'Sullivan. , Mast cell tryptase reduces junctoinal adhesion molecule A in intestinal epithelial cells: implications for barrier dysfunction in Irritable Bowel Syndrome. , American J Gastroenterol, E-pub , (Jan), 2013, p0 - 0Journal Article, 2013
• Duggan SN, O Sullivan M, Hamilton S, Feehan SM, Ridgway PF, Conlon KC, Patients with chronic pancreatitis are at increased risk for osteoporosis., Pancreas, 41, (7), 2012, p1119-24Journal Article, 2012
• Nic Suibhne T, Raftery TC, McMahon O, Walsh C, O Morain C, O'Sullivan M, High prevalence of overweight and obesity in adults with Crohn's disease: Associations with disease and lifestyle factors., Journal of Crohns & colitis, Oct 3, 2012Journal Article, 2012
• O'Sullivan M, Raftery T, Nic Suibhne T, Differences in obesity in Crohn's disease in Japan and western countries, J Crohns Colitis, Nov , 2013Journal Article, 2013
• Dietary treatment of Inflammatory Bowel Disease in, editor(s)Miranda Lomer , Diet and Inflammatory Bowel Disease, UK, 2013, pp0 - 0, [Maria O'Sullivan, Tara Raftery]Book Chapter, 2013
• T Raftery, A Martineau, C Greiller, S Ghosh, D McNamara, J Meddings, M O'Sullivan, Effects of Vitamin D Supplementation on Intestinal Permeability, Plasma Cathelicidin and Human Beta-Defensin-2 in Crohn's Disease: Results from a Randomised Double-blind Placebo-Controlled Study, Gastroenterology, American Gastroenterological Association, Florida, US, April 2013, edited by DDW , S, DDW, 2013, pp0 - 0Conference Paper, 2013
• Tara C. Raftery, Czara Kennedy, Colm A. O'Morain, Deirdre McNamara, Maria O'Sullivan., Longitudinal Changes in Body Mass Index and Abdominal Obesity in Crohn's Disease - Associations With Inflammatory Markers and Disease Course., Gastroenterology, Digestive Disease Week, USA, May 2013, 144, (S1), 2013, ppS-126-Conference Paper, 2013
• Wilcz-Villega E, McClean S, O'Sullivan M, Reduced E-cadherin expression is associated with abdominal pain and symptom duration in a study of alternating and diarrhea predominant IBS, Neurogastroenterol Motil. , 26, (3), 2014, p316 - 325Journal Article, 2014
• Duggan SN, Smyth ND, O'Sullivan M, Feehan S, Ridgway PF, Conlon KC., The prevalence of malnutrition and fat-soluble vitamin deficiencies in chronic pancreatitis., Nutr Clin Pract., 29, (3 ), 2014, p348 - 354Journal Article, 2014, DOI

• Title

  Health, Demographic and Malnutrition Risk factors among Community Dwelling oldest old: analysis of the North Dublin Cohort
  Summary

  Investigations into the Health, Demographic and Malnutrition Risk factors among Community Dwelling oldest old, based on an analysis of adults receiving formal home care support. including cognition, physical function, health status, malnutrition, isolation.
  Funding Agency

  Not-for Profit
  Date From

  2016
• Title

  Vitamin D and Inflammation: Optimal Requirements and Novel Roles in Inflammatory Bowel Disease
  Summary

  This program of research focuses on investigating the effect of vitamin D supplementation on inflammatory in patients with IBD, primarily through randomized controlled trials and mechanistic studies.
  Funding Agency

  Irish Research Council and TCD postgrad Award
  Date From

  2010
  Date To

  2014
• Title

  ERA4-Health NutriBrain - Omega-3 and B vitamins to Modulate Brain Ageing in European Citizens
  Summary

  An ERA4-Health funded European partnership (2024) study. The consortium will investigate Omega-3 fatty acids and B vitamins in modulating brain ageing in European Citizens, The innovative project will integrate human nutrition intervention studies (RCTs), data-driven research and mechanistic work.
  Funding Agency

  ERA4Health - EU
  Date From

  2025 tbc
• Title

  Nutritional factors and inflammation: role of overweight/obesity in Inflammatory bowel disease.
  Summary

  Studies of obesity and lifestyle factors in Inflammatory Bowel Disease, including the impact of overweight/obesity on inflammation and co-morbidity in diseases traditional associated with underweight.
  Funding Agency

  Meath Foundation
  Date From

  2009
  Date To

  2013
• Title

  Chronic Disease in community dwelling older adults - associations with area level deprivation
  Summary
  Funding Agency

  Collaborative HSE - Age & Opportunity
  Date From

  March 2022
• Title

  Vitamin D deficiency in ageing, and associations with muscle function and inflammation
  Summary

  Investigations into Vitamin D deficiency in community-dwelling older adults and associations with muscle function and inflammation (inflame-ageing). This work is based on analysis of the English Longitudinal Study of Ageing (ELSA); and analysis of RCT data.
  Funding Agency

  IRC
  Date From

  2016
  Date To

  2018
• Title

  Supporting physical function in community dwelling older adults - a focus on health inequality and ageing in place
  Summary

  This programme of work focuses on socioeconomic position and physical activity, sarcopenia and health variables in dependent older adults'. Including strategies to address intervention and policy (Ph.D. awarded 2023)
  Funding Agency

  Not for profit - North Dublin Home Care (registered charity)
  Date From

  2019
  Date To

  2022
• Title

  'Role of tight junction markers and mast cells in gut-barrier function in colonic disease.
  Summary

  Principal Investigator - Higher Education Authority Program for Research in Third Level Institutes (PRTLI) Cycle 4 funding Centre of Applied Sciences for Health' CASH consortium'. Investigations into the intestinal permeability in colonic disease, including mast cells, JAMA, E-Cadherin and ZO1. Co-PI: Dr Siobhan McClean, ITT, Tallaght
  Funding Agency

  HEA (PRTLI) Cycle 4 and Meath Foundation
  Date From

  2009
  Date To

  2014
• Title

  Malnutrition, deficiency, and nutritional practice in patients with acute and chronic pancreatitis
  Summary

  An investigation into Malnutrition, Osteoporosis and optimising best nutritional practice in patients with acute and chronic pancreatitis; Role: Academic co-supervisor
  Funding Agency

  HRB Therapy Award For Sinead Duggan
  Date From

  2009
  Date To

  2013
• Title

  Effects of Vitamin D on cognition and inflammation in healthy older adults- A Randomised Controlled Trial
  Summary

  Investigations into the role of vitamin D on inflammatory markers and in supporting cognition in community dwelling older adults. Includes intervention and mechanistic studies.
  Funding Agency

  Irish Research Council
  Date From

  Sept 2014
  Date To

  Sept 2018
• Title

  Vitamin D and cognition - an analysis of 25OHD levels and cognitive domains in healthy older adults.
  Summary

  A proof of concept study, with Niamh Aspell, in collaboration with TriL, Prof Brian Lawlor (TCD)and Dr Joanna McHugh (QUB)
  Funding Agency

  IRC and not-for-profit
  Date From

  2014
• Title

  Embedding physical activity to improve and maintain functional status in older adults: A feasibility study on the implementation of the Care to Move (CTM) programme
  Summary

  This project is part of a collaborative multidisciplinary research programme that aims to promote physical activity and movement in ageing in community dwelling older adults and to support ageing in place. This HRB APA award is in conjunction with expert colleagues in RCSI, HSE, UL, Curtin University Australia and Glasgow Caledonian University. The research aims to examine the feasibility of using an activity programme that empowers older people to 'move more' and reduce sitting time, in community dwelling older people receiving formal home care - a cohort largely comprising adults aged 80+ years. Ultimately, the application would be to embed multimodal personalised supports in formal home care to improve outcomes and quality of life in older populations.
  Funding Agency

  HRB
  Date From

  2018
  Date To

  2022
• Title

  Investigating a data-driven approach to inform population-based resource allocation for improved equity in primary care services in Ireland.
  Summary

  A collaborative project investigating a data-driven approach to understanding population-based resource allocation. The key goal is to improve equity in primary care services in Ireland.
  Funding Agency

  HRB
  Date From

  October 2024
  Date To

  2026

Immunology, Genetics, Clinical Medicine, Nutrition and dietetics,

• Honorary Editor in Chief, of Proceedings of the Nutrition Society - Current Impact Factor 7.6 2012-2016
• Best Paper Award - Open Access Awards, Health Service Executive, Dec 2018 ( Topic: Ageing: Frailty) 2018
• Sir David Cuthbertson Medal. Awarded at the Royal College of Surgeons London by the Nutrition Society UK. I was the First Irish based recipient, in the 23 years since award initiation 2013
• Awarded a place and funding for the highly competitive American Gastroenterological Association Academic Skills Workshop, Florida (First Irish Based Recipient) 2005
• Deans Award for Innovations in Teaching, TCD, for developments in inter-professional learning 2017
• Best Paper Award - Published in the European UEG Journal 2016 for our team, Presented in Vienna, Oct 2016. (Topic: Vitamin D - Gut Permeability) 2016
• Best Video Abstract Award 2022, Dove Medical Press, (Topic: Ageing - Frailty, Physical Activity) 2022
• Nominated for the Excellence in Research Student Supervision, Award, Trinity 2022
• Postgraduate Research Scholarship Award, Scientific Hospital Supplies Ltd. (Competitive application) 1994
• The Haughton Institute Postdoctoral Career Support Award, Faculty of Health Sciences, Trinity 2002
• 7th Annual Young Investigator Award, Functional Brain-Gut Research Group, presented at American Gastroenterological Association Meeting, San Francisco, USA. (I was the first Irish based recipient ) 2002
• Nominated for the United European Gastroenterology Federation `Rising Star' in Gastroenterology 2004
• Featured in Women in Science Exhibition, Royal College of Medicine, as one of nine female winners of the Cuthbertson medal, Nutrition Society (UK). 2018
• Elected Trustee of the Nutrition Society UK- International, (Board of Directors) - Open Election by Membership 2024-
• Cancer Prevention Summer Fellow at the National Cancer Institute, Maryland, USA, Competitive Award, supported by the HRB 2003
• Trinity Trust Travel Awards to Present at US Conferences, Digestive Disease Week, San Francisco and Washington DC 1996-97
• Invited Faculty: American Gastroenterological Association, Focused Research Roundtable Session. Inflammation and Functional Bowel Disease May 2010, New Orleans, USA. 2010
• Mentored award winning graduate students e.g. Many distinguished Research Awards, Prizes and Medals 2004-date
• Honorary Editor Board Member for 'Proceedings of the Nutrition Society' - Current Impact Factor 7.6 2011-12
• Invited and Guest speaker, e.g. University of Cambridge, University of Gothenburg, European and National Conferences 2008
• Graduate Medal for the Most Outstanding Performance in Clinical Nutrition Practice 1993

• Chair of the Research Committee, Irish Society for Clinical Nutrition & Metabolism (IrSPEN) 2017
• Elected Trustee (Board of Directors) of the Nutrition Society (An International Society, Head office London) 2027
• Member of the Editorial Board of 'Proceedings of the Nutrition Society' 2012
• Managment Committee member, Irish Society for Clinical Nutrition & Metabolism (IrSPEN) 2017
• Research Committee Member, Health Service Executive (HSE) for Health & Social Care Professions 2015
• Member of the Publications Committee of the Nutrition Society, as an Editor in Chief 2016
• Royal Irish Academy, Committee for Life and Medical Sciences, Appointed Member 2017
• Member, European Society of Clinical Nutrition and Metabolism (ESPEN) 2015
• Nutrition Society Member (2007-date) date
• Member of th Nutrition Society Special Interest Group (SIG) for `Nutrition and Cancer' date
• Member of the Nutrition Society Special Interest Group (SIG) for 'Nutrition and older people' date
• Research Committee Member, Irish Nutrition & Dietetic Institute 2011
• Member, WiSER and Association for Women in Science AWS 2012
• Editor in Chief of 'Proceedings of the Nutrition Society' and Chair of the Editorial Board. 2016
• Member, American Gastroenterological Association 2009
• Member, Functional Brain Gut Research Group, US based 2008
• Member of the Science Committee of the Nutrition Society (UK- International) 2016
• Ex officio Member of the Nutrition Society Science Committee and of the Council as a Trustee 2027
• Associate Member of the Irish Society of Gastroenterology 2010

• Invited Expert Grant Reviewer: Programme National de Researches sur la Nutrition Humaine (PRNH), France. 2004-2005
• Member of the Nutrition Society Special Interest Group (SIG) for `Nutrition and Cancer' 2024-date
• Invited reviewer for over 20 high-impact journals including British Medical Journal Open; Cochrane; Gastroenterology, Gut, Inflammatory Bowel Disease; Journal of Crohn's and Colitis; Alimentary Pharmacology & Therapeutics; Digestive Diseases; European Journal of Gastroenterology & Hepatology; Nutrients; Age & Ageing; BMC Geriatrics; PLoS-One, American Journal of Clinical Nutrition; Proceedings of the Nutrition Society; European Journal of Nutrition; Molecular Nutrition and Food Research; Human Nutrition & Dietetics. 2001-2024
• Elected Trustee of the Nutrition Society UK- International, (Board of Directors) - Open Election by Membership 2024-date
• Royal Irish Academy, Committee for Life and Medical Sciences, Appointed Member 2014
• Invited Expert Evaluator for the American Institute of Biological Sciences for grants awarded by the US Government Grants. Washington DC. 2008
• Chair of the Research Committee, and Management Committee member for the Irish Society for Clinical Nutrition & Metabolism (IrSPEN) 2013-17
• Member, Research Committee, Health & Social Care Professions, HSE, Ireland 2012-15
• Irish Representative on the Management Committee for the European COST action BM1007: Mast Cells and Basophils - Targets for Innovative Therapies 2011-14 2011-14
• Member of the Publications Committee of the Nutrition Society, as and Editor in Chief 2012-2016
• Ex officio Member of the Nutrition Society Science Committee and of the Council as a Trustee 2024-date
• Chair of the Editorial Board for the Journal 'Proceedings of the Nutrition Society' 2012-16
• Member of the Management Committee and Scientific committee and a PI in the Centre of Applied Sciences for Health (CASH), a government (HEA/PRTLI Cycle 4) funded research consortium www.appliedscience4health.ie 2008-2012
• Member of the Nutrition Society Special Interest Group (SIG) for 'Nutrition and older People' 2024-date
• Editor in Chief of the Proceedings of the Nutrition Society (Current Impact Factor 7.3) 2012-2016
• Member of the Editorial Board of 'Proceedings of the Nutrition Society' 2011-2012
• Invited Expert Grant Evaluator, Broad Medical Research Program for Inflammatory Bowel disease (IBD), CA, USA. Now part of CCFA 2005-2012
• Invited Expert Evaluator for EU FP7-Health (obesity-metabolism) as a remote reviewer, on-site Panel member and Panel Representative, Brussels. 2009
• Member of Conference Abstract Review Panels for several bodies, eg the American Gastroenterological Association Digestive Disease Week (DDW), US; IrSPEN Conferences, Dublin. Health & Social Care Professions Research Conferences, Dublin; Federation of European Nutrition Societies. The Nutrition Society, UK, NI, Ireland. 2009-date
• External Examiner, PhDs, MSc University of Ulster, Northern Ireland, and Technological University of Dublin 2021, 2016
• Member of the Scientific Committee, the Nutrition Society UK- International 2012-2016