Scientists explain how tiny gut bacteria influence your body’s health and why many animals on Earth are still waiting to be discovered.

Experiments in mice and human tissue indicate that a reduction in bacteria living in the large intestine decreases mucus ...

This story is part of a series exploring human anatomy and physiology complexities. Each story in this collection showcases discoveries reshaping our understanding of the body's inner workings, ...

Intestinal villi (singular: villus)are tiny, finger-like projections that line the interior (lumen) of the small intestine. The primary function of villi is to absorb nutrients from food and transfer ...

The human small intestine is an essential organ that helps us absorb nutrients and vitamins from food. It is an average of 6 meters long and is covered with millions of villi that are separated by ...