Gut bacteria create smells that influence behavior, shaping aggression and social hierarchy through the brain.

Have you ever made a decision that, in hindsight, seemed irrational? A new study with mice, which could have implications for people, suggests that some decisions are, to a certain extent, beyond ...

A new study tracing the evolution of same-sex sexual behavior in mammals, using phylogenetic analyses, suggests these behaviors may have evolved in part to strengthen social bonding and relationships.

Two new studies from the UC Davis MIND Institute examined regulatory T cells (Tregs) and their potential role in ...

UNDATED (CNN) -- In our household, we're still talking about the critically acclaimed box office smash "Inside Out," Pixar's animated look at the emotions inside a child's brain. It came up most ...

Drinking coffee at night might come with an unexpected downside: increased impulsivity. In a new study, fruit flies given ...

Forbes contributors publish independent expert analyses and insights. Dr. Nina Shapiro is a physician writer who dispels health myths. The investigators randomly assigned half of the children with ...