Those with anxiety disorders have more activity in specific part of brain if interpreting situations negatively, study finds.

The tomatoes, designed to mimic the effect of "good" cholesterol, reduced the negative activity of unsaturated lysophosphatidic acids, which are found in the small intestine.

Teenagers who go to bed late during the school year are more prone to academic and emotional difficulties in the long run, compared to their earlier-to-bed counterparts.

Computer program helps users identify symptoms, facilitates discussion with physicians.

First-ever isolation of related virus ultimately will lead to opportunities for vaccine development.

Vector biologist Anthony James takes a fresh look at how mosquitoes transmit malaria and other diseases.

BPA, found in plastics and food containers, can alter the body's metabolism, making it difficult for children to lose weight.

Programs that try to get employees to become healthier and reduce medical costs have a limited effect on either.

UCSF researcher\'s new book casts the sweet stuff as a toxic contributor to obesity.

Prions, long studied by UCSF professor and Nobel laureate Stanley Prusiner, build up in the brain to cause Alzheimer's and other dementias. Now they're linked to post-traumatic stress disorder in combat veterans and in the brain damage of athletes who have suffered repeated concussions.

Donation will fully fund costs for select students; with previous gift, it makes David Geffen the largest individual donor in the history of UCLA.

A two- or three-drug combination given to infants of HIV-positive mothers within 48 hours of birth cut infection rates to half of what was achieved with AZT alone.