Diet and the Microbiome

At all stages of life, humans are associated with microorganisms and their products. Diet plays a crucial role in shaping the composition of the gut microbiome. Different dietary patterns, such as vegan, vegetarian, and omnivorous diets, result in distinct microbiome profiles. Recent research is rapidly strengthening the appreciation that associated microorganisms make essential contributions to human health and well-being. A low diversity of microorganisms is associated with a plethora of diseases including allergy, diabetes, obesity, arthritis, inflammatory bowel diseases and even neuropsychiatric disorders. Thus, an interaction of microorganisms with the host immune system is required for a healthy body. The microbiome in humans is also not constant during lifespan, but rather changes with age. Culture and location also have a profound impact on the microbiome. Diet is a particularly important factor in determining the microbiota composition of the gut. Thus, vegans, vegetarians and omnivores have distinct microbiomes.

Table of Contents:

1. Feeding the Microbiome: How Diet Shapes Human Health 2. The Intricate Relationship Between Food and Gut Microbes: Implications in Health and Diseases 3. The Role of Fiber Rich Diet in Modulating the Gut Microbiome and Health Outcomes 4. The Living Pantry: Understanding the Bacterial Ecosystem in Fermented Foods 5. Probiotics and Prebiotics in Gut Health 6. Impact of Physical Exercise on the Gut Microbiota 7. Dietary Polyphenols and the Gut Microbiome 8. The Impact of Ultra-Processed Foods on the Microbiome and Human Health 9. Peinosis - The Shortening of the Colon when on a High Fat, High Protein Diet

Professor Sunil Thomas is a Research Professor at the Lankenau Institute for Medical Research in Wynnewood, Pennsylvania, where he leads innovative work at the intersection of cell biology, microbiology, and translational medicine. His research is primarily focused on developing next-generation immunotherapies for complex and chronic conditions, including inflammatory bowel diseases and Alzheimer’s disease. A key component of his work involves investigating the role of the microbiome in disease progression and therapeutic response.
Over the course of his career, Professor Thomas has made significant contributions to the fields of infectious disease and vaccine development. He has been involved in the design and development of diagnostic tools and vaccines targeting a range of infectious pathogens. In addition, his research has extended into the structural biology of viruses, providing insights into viral mechanisms that inform both therapeutic and preventive approaches.
Professor Thomas earned his Ph.D. in Environmental Biotechnology from Cochin University of Science and Technology (CUSAT) in India. He subsequently completed postdoctoral training at the Indian Institute of Science in Bangalore and at the Mount Sinai School of Medicine in New York, where he further refined his expertise in molecular and translational biomedical research.
An accomplished scholar, Professor Thomas has authored more than 70 peer-reviewed publications and contributed to books on vaccines and infectious diseases. He is also an inventor on multiple patents, reflecting the practical and translational impact of his research.