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Paul W. O’Toole

Active 1983–2026

181
Papers
48,134
Citations
101
h-index
174
i10-index

Citations

Citations per year for Paul W. O’Toole1983: 2 citations1986: 1 citations1990: 1 citations1991: 2 citations1992: 11 citations1993: 36 citations1994: 34 citations1995: 22 citations1996: 15 citations1997: 26 citations1998: 19 citations1999: 33 citations2000: 21 citations2001: 20 citations2002: 15 citations2003: 16 citations2004: 11 citations2005: 27 citations2006: 17 citations2007: 41 citations2008: 54 citations2009: 74 citations2010: 102 citations2011: 180 citations2012: 305 citations2013: 471 citations2014: 547 citations2015: 558 citations2016: 659 citations2017: 834 citations2018: 824 citations2019: 1,883 citations2020: 2,617 citations2021: 2,929 citations2022: 2,728 citations2023: 2,091 citations2024: 3,124 citations2025: 1,626 citations2026: 51 citations1984–1985: no citations, so these years are not shown1987–1989: no citations, so these years are not shown

Citation sources

Countries

World map of the countries and regions citing this authorUnited States: 4,243 citing papers, 16.1% of this breakdownChina: 3,989 citing papers, 15.2% of this breakdownItaly: 1,515 citing papers, 5.8% of this breakdownUnited Kingdom: 1,386 citing papers, 5.3% of this breakdownIreland: 936 citing papers, 3.6% of this breakdownFrance: 907 citing papers, 3.5% of this breakdownSpain: 906 citing papers, 3.4% of this breakdownGermany: 894 citing papers, 3.4% of this breakdownCanada: 891 citing papers, 3.4% of this breakdownNetherlands: 778 citing papers, 3% of this breakdownAustralia: 639 citing papers, 2.4% of this breakdownIndia: 591 citing papers, 2.2% of this breakdown
0%16.1%Other 32.7%

Institutions

Fields

  • Biochemistry, Genetics and Molecular Biology48.8%
  • Medicine22.2%
  • Agricultural and Biological Sciences14%
  • Nursing3.7%
  • Immunology and Microbiology2.5%
  • Environmental Science2.5%
  • Other6.3%

Topics

  • Gut microbiota and health20.8%
  • Probiotics and Fermented Foods7.5%
  • Diet and metabolism studies5.8%
  • Clostridium difficile and Clostridium perfringens research4.2%
  • Gastrointestinal motility and disorders2.7%
  • Tryptophan and brain disorders2.3%
  • Other56.7%

Coauthors

All papers

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  1. A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae

    Authors: Jinshui Zheng, Stijn Wittouck, Elisa Salvetti, Charles M. A. P. Franz, Hugh M. B. Harris, Paola Mattarelli, Paul W. O’Toole, Bruno Pot, Peter Vandamme, Jens Walter, Koichi Watanabe, Sander Wuyts, Giovanna E. Felis, Michael G. Gänzle, Sarah Lebeer - INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 2020 cited by 3,176

  2. The gut microbiome as a modulator of healthy ageing

    Authors: Tarini Shankar Ghosh, Fergus Shanahan, Paul W. O’Toole - Nature Reviews Gastroenterology & Hepatology 2022 cited by 750

  3. Gut microbiota composition correlates with diet and health in the elderly

    Authors: Marcus J. Claesson, Ian B. Jeffery, Susana Conde, Susan Power, Eibhlís M. O’Connor, Siobhán Cusack, Hugh M. B. Harris, Mairéad Coakley, B. Lakshminarayanan, Órla O’Sullivan, Gerald F. Fitzgerald, Jennifer Deane, Michael OʼConnor, Norma Harnedy, Kieran O’Connor, Denis O’Mahony, Douwe van Sinderen, Martina Wallace, Lorraine Brennan, Catherine Stanton, Julian R. Marchesi, Anthony P. Fitzgerald, Fergus Shanahan, Colin Hill, R. Paul Ross, Paul W. O’Toole - Nature 2012 cited by 3,335

  4. Mediterranean diet intervention alters the gut microbiome in older people reducing frailty and improving health status: the NU-AGE 1-year dietary intervention across five European countries

    Authors: Tarini Shankar Ghosh, Simone Rampelli, Ian B. Jeffery, Aurelia Santoro, Marta C. Neto, Miriam Capri, Enrico Giampieri, Amy Jennings, Marco Candela, Silvia Turroni, Erwin G. Zoetendal, Gerben D. A. Hermes, Elodie Caumon, Nathalie Meunier, Corinne Malpuech‐Brugère, Estelle Pujos‐Guillot, A. M. Berendsen, C.P.G.M. de Groot, Edith J M Feskins, Joanna Kałuża, Barbara Pietruszka, Marta Jeruszka-Bielak, Blandine Comte, Monica Maijo-Ferre, Claudio Nicoletti, Willem M. de Vos, Susan J. Fairweather‐Tait, Aedín Cassidy, Patrizia Brigidi, Claudio Franceschi, Paul W. O’Toole - Gut 2020 cited by 942

  5. High-level adherence to a Mediterranean diet beneficially impacts the gut microbiota and associated metabolome

    Authors: Francesca De Filippis, Nicoletta Pellegrini, Lucia Vannini, Ian B. Jeffery, Antonietta La Storia, Luca Laghi, Diana Isabella Serrazanetti, Raffaella Di Cagno, Ilario Ferrocino, Camilla Lazzi, Silvia Turroni, Luca Cocolin, Patrizia Brigidi, Erasmo Neviani, Marco Gobbetti, Paul W. O’Toole, Danilo Ercolini - Gut 2015 cited by 1,591

  6. Dietary Fibre Modulates the Gut Microbiota

    Authors: Peter Cronin, Susan A. Joyce, Paul W. O’Toole, Eibhlís M. O’Connor - Nutrients 2021 cited by 634

  7. Next-generation probiotics: the spectrum from probiotics to live biotherapeutics

    Authors: Paul W. O’Toole, Julian R. Marchesi, Colin Hill - Nature Microbiology 2017 cited by 929

  8. Exercise and associated dietary extremes impact on gut microbial diversity

    Authors: Siobhan F. Clarke, Eileen F. Murphy, Órla O’Sullivan, Alice Lucey, Margaret Humphreys, Aileen Hogan, P. Lynn Hayes, Maeve O’Reilly, Ian B. Jeffery, Ruth Wood-Martin, David Kerins, Eamonn M.M. Quigley, R. Paul Ross, Paul W. O’Toole, Michael G. Molloy, Éanna Falvey, Fergus Shanahan, Paul D Cotter - Gut 2014 cited by 1,410

  9. Enterotypes in the landscape of gut microbial community composition

    Authors: Paul Igor Costea, Falk Hildebrand, Manimozhiyan Arumugam, Fredrik Bäckhed, Martin J. Blaser, Frederic D. Bushman, Willem M. de Vos, S. Dusko Ehrlich, Claire M. Fraser, Masahira Hattori, Curtis Huttenhower, Ian B. Jeffery, Dan Knights, James D. Lewis, Ruth E. Ley, Howard Ochman, Paul W. O’Toole, Christopher Quince, David A. Relman, Fergus Shanahan, Shinichi Sunagawa, Jun Wang, George M. Weinstock, Gary D. Wu, Georg Zeller, Liping Zhao, Jeroen Raes, Rob Knight, Peer Bork - Nature Microbiology 2017 cited by 1,228

  10. Fermented Foods, Health and the Gut Microbiome

    Authors: Natasha Leeuwendaal, Catherine Stanton, Paul W. O’Toole, Tom Beresford - Nutrients 2022 cited by 433

  11. Gut microbiota and aging

    Authors: Paul W. O’Toole, Ian B. Jeffery - Science 2015 cited by 1,221

  12. Questioning the fetal microbiome illustrates pitfalls of low-biomass microbial studies

    Authors: Katherine M. Kennedy, Marcus C. de Goffau, María Elisa Pérez-Muñoz, Marie‐Claire Arrieta, Fredrik Bäckhed, Peer Bork, Thorsten Braun, Frederic D. Bushman, Joël Doré, Willem M. de Vos, Ashlee M. Earl, Jonathan A. Eisen, Michal A. Elovitz, Stephanie C. Ganal‐Vonarburg, Michael G. Gänzle, Wendy S. Garrett, Lindsay J. Hall, Mathias W. Hornef, Curtis Huttenhower, Liza Konnikova, Sarah Lebeer, Andrew J. Macpherson, Ruth C. Massey, Alice C. McHardy, Omry Koren, Trevor D. Lawley, Ruth E. Ley, Liam O’Mahony, Paul W. O’Toole, Eric G. Pamer, Julian Parkhill, Jeroen Raes, Thomas Rattei, Anne Salonen, Eran Segal, Nicola Segata, Fergus Shanahan, Deborah M. Sloboda, Gordon C. S. Smith, Harry Sokol, Tim D. Spector, Michael G. Surette, Gerald W. Tannock, Alan W. Walker, Moran Yassour, Jens Walter - Nature 2023 cited by 362

  13. Composition, variability, and temporal stability of the intestinal microbiota of the elderly

    Authors: Marcus J. Claesson, Siobhán Cusack, Órla O’Sullivan, Rachel Greene-Diniz, Heleen de Weerd, Edel Flannery, Julian R. Marchesi, Daniel Falush, Timothy G. Dinan, Gerald F. Fitzgerald, Catherine Stanton, Douwe van Sinderen, Michael O′Connor, Norma Harnedy, Kieran O’Connor, Colm Henry, Denis O’Mahony, Anthony P. Fitzgerald, Fergus Shanahan, C. Twomey, Colin Hill, R. Paul Ross, Paul W. O’Toole - National Academy of Sciences, Proceedings of the National Academy of Sciences 2010 cited by 1,742

  14. γ-Aminobutyric acid production by culturable bacteria from the human intestine

    Authors: Eva Barrett, R. Paul Ross, Paul W. O’Toole, Gerald F. Fitzgerald, Catherine Stanton - Journal of Applied Microbiology 2012 cited by 1,143

  15. Towards standards for human fecal sample processing in metagenomic studies

    Authors: Paul Igor Costea, Georg Zeller, Shinichi Sunagawa, Éric Pelletier, Adriana Alberti, Florence Levenez, Melanie Tramontano, Marja Driessen, Rajna Hercog, Ferris Jung, Jens Roat Kultima, Matthew R. Hayward, Luís Pedro Coelho, Emma Allen‐Vercoe, Laurie Bertrand, Michaël Blaut, Jillian R. Brown, Thomas Carton, Stéphanie Cools-Portier, Michelle C. Daigneault, Muriel Derrien, Anne Druesne, Willem M. de Vos, B. Brett Finlay, Harry J. Flint, Francisco Guarner, Masahira Hattori, Hans G. H. J. Heilig, Ruth Ann Luna, Johan van Hylckama Vlieg, Jana Junick, Ingeborg Klymiuk, Philippe Langella, Emmanuelle Le Chatelier, Volker Mai, Chaysavanh Manichanh, Jennifer C. Martin, Clémentine Mery, Hidetoshi Morita, Paul W. O’Toole, Céline Orvain, Kiran Raosaheb Patil, John Penders, Søren Persson, Nicolas Pons, Milena Popova, Anne Salonen, Delphine Saulnier, Karen P. Scott, Bhagirath Singh, Kathleen Slezak, Patrick Veiga, James Versalovic, Liping Zhao, Erwin G. Zoetendal, S. Dusko Ehrlich, Joël Doré, Peer Bork - Nature Biotechnology 2017 cited by 904

  16. The Healthy Microbiome—What Is the Definition of a Healthy Gut Microbiome?

    Authors: Fergus Shanahan, Tarini Shankar Ghosh, Paul W. O’Toole - Gastroenterology 2020 cited by 372

  17. The oral microbiota in colorectal cancer is distinctive and predictive

    Authors: Burkhardt Flemer, Ryan D. Warren, Maurice Barrett, Katryna Cisek, Anubhav Das, Ian B. Jeffery, Eimear Hurley, Micheal O‘Riordain, Fergus Shanahan, Paul W. O’Toole - Gut 2017 cited by 679

  18. Tumour-associated and non-tumour-associated microbiota in colorectal cancer

    Authors: Burkhardt Flemer, Denise B. Lynch, Jillian M R Brown, Ian B. Jeffery, Feargal J. Ryan, Marcus J. Claesson, Micheal O‘Riordain, Fergus Shanahan, Paul W. O’Toole - Gut 2016 cited by 827

  19. Elevated gut microbiome abundance of Christensenellaceae, Porphyromonadaceae and Rikenellaceae is associated with reduced visceral adipose tissue and healthier metabolic profile in Italian elderly

    Authors: Teresa Tavella, Simone Rampelli, Giulia Guidarelli, Alberto Bazzocchi, Chiara Gasperini, Estelle Pujos‐Guillot, Blandine Comte, Monica Barone, Elena Biagi, Marco Candela, Claudio Nicoletti, Fawzi Kadi, Giuseppe Battista, Stefano Salvioli, Paul W. O’Toole, Claudio Franceschi, Patrizia Brigidi, Silvia Turroni, Aurelia Santoro - Gut Microbes 2021 cited by 301

  20. Toward an improved definition of a healthy microbiome for healthy aging

    Authors: Tarini Shankar Ghosh, Fergus Shanahan, Paul W. O’Toole - Nature Aging 2022 cited by 119

  21. Composition and temporal stability of the gut microbiota in older persons

    Authors: Ian B. Jeffery, Denise B. Lynch, Paul W. O’Toole - The ISME Journal 2015 cited by 415

  22. Adjusting for age improves identification of gut microbiome alterations in multiple diseases

    Authors: Tarini Shankar Ghosh, Mrinmoy Das, Ian B. Jeffery, Paul W. O’Toole - eLife 2020 cited by 223

  23. Arrhythmic Gut Microbiome Signatures Predict Risk of Type 2 Diabetes

    Authors: Sandra Reitmeier, Silke Kießling, Thomas Clavel, Markus List, Eduardo L. Almeida, Tarini Shankar Ghosh, Klaus Neuhaus, Harald Grallert, Jakob Linseisen, Thomas Skurk, Beate Brandl, Taylor A. Breuninger, Martina Troll, Wolfgang Rathmann, Birgit Linkohr, Hans Hauner, Matthias Laudes, André Franke, Caroline Le Roy, Jordana T. Bell, Tim D. Spector, Jan Baumbach, Paul W. O’Toole, Annette Peters, Dirk Haller - Cell Host & Microbe 2020 cited by 289

  24. Composition and energy harvesting capacity of the gut microbiota: relationship to diet, obesity and time in mouse models

    Authors: Eileen F. Murphy, Paul D. Cotter, Sara A. Healy, Tatiana M. Marques, Órla O’Sullivan, Fiona Fouhy, Siobhan F. Clarke, Paul W. O’Toole, Eamonn M.M. Quigley, Catherine Stanton, R. Paul Ross, Robert M. O’Doherty, Fergus Shanahan - Gut 2010 cited by 951