Authors warn against using body size as sole measure of good health, but other experts cite risks of too much weight

Researchers find alterations in gut microbes at different times of year

And, about two-thirds don't see cancer diagnosis as inevitably fatal, Harris Poll finds

Jousting-linked brain trauma might have caused damage similar to that affecting football players today

Finding points to why sleep problems may be linked to poor pregnancy outcomes, researcher says

Impulsiveness, eating disorders may help explain possible link, researcher says

Males made greater gains than women, study says

Researchers found they reduced risk for respiratory problems in infants born at 34 to 36 weeks

Researchers also found music helps during the procedure

Study of in vitro fertilization shows slightly elevated risk, but experts aren't sounding alarms