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Brain tumors use the brain’s plasticity to promote their own growth.

Microbiomes transplanted from women with anorexia nervosa into mice enhanced symptoms of the eating disorder, such as rapid weight loss and reduced appetite.

The expansion of mucus-degraders in the mouse gut—possibly due to poor nutrition—thins the colon’s mucus layer and may weaken defenses against blood-infecting microbes.

Renewing the aging gut microbiome holds promise for preventing inflammatory brain and eye degeneration.

Bacteria in the gut influence the production of antibodies and themselves secrete metabolites. In a pregnant woman, these compounds may influence immune development of her fetus.

Researchers are beginning to decipher the metabolic language of the microbiome, and determine how gut microbes communicate with host tissue.

The popular type 2 diabetes drug may cause profound changes in patients’ microbiomes.

Scientists show that fiber’s influence on gut microbes affects the lungs’ response to allergens.

Acetate, a short-chain fatty acid released following the fermentation of dietary fiber in the gut, accumulates in the brain and can affect appetite in mice.

Gut bacteria may be the missing piece that explains the connection between diet and cancer risk.