Orla O’Sullivan


Research focus

Orla O’Sullivan is a Senior Computational Biologist in Teagasc Food Research Centre, Ireland and Principal Investigator with VistaMilk and APC Microbiome Ireland (Science foundation Ireland Research Centres). Her research focuses on elucidating the microbiome from various environments including human gut and lung, soil, rumen and food.

Focus in CoDiet

Teagasc are involved in work packages 2 and 5 in CoDiet. We will coordinate the Irish arm of the observational and interventional clinical trials. Teagasc, along with University of Trento, will undertake the metagenomic sequencing of faecal samples collected during trials and perform the downstream data analysis of the sequences produced.


Barton, W., O. Cronin, I. Garcia-Perez, R. Whiston, E. Holmes, T. Woods, C. B. Molloy, M. G. Molloy, F. Shanahan, P. D. Cotter and O. O’Sullivan (2020). “The effects of sustained fitness improvement on the gut microbiome: A longitudinal, repeated measures case-study approach.” Translational Sports Medicine.

O’Donovan, C. M., B. Connor, S. M. Madigan, P. D. Cotter and O. O’Sullivan (2020). “Instances of altered gut microbiomes among Irish cricketers over periods of travel in the lead up to the 2016 World Cup: A sequencing analysis.” Travel Medicine and Infectious Disease: 101553.

Barton W, Penney NC, Cronin O, Garcia-Perez I, Molloy MG, Holmes E, Shanahan, F, Cotter, PD, O’Sullivan, O.The microbiome of professional athletes differs from that of more sedentary subjects in composition and particularly at the functional metabolic level. Gut. 2018;67(4):625.

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