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New structural details illustrate how a promising class of antibodies may block human immunodeficiency virus (HIV)-1 infection and reveal valuable clues for design of an effective HIV-1 vaccine.

The majority of 2,300 psychiatry outpatients in a new studly had more than one disorder when seeking treatment, and more than one-third had at least three disorders.

Smokers appear to have an increased long-term risk and greater progression of the eye disease age-related macular degeneration, according to a new article.

Fish oil supplements may help some cardiac patients while harming others, suggests a new review of evidence. In a systematic review of trials where patients with implantable cardioverter defibrillators used fish oil supplements, scientists found significant differences among the trials, indicating fish oil may be beneficial to some patients while having a negative impact on others.

Vitamin D2 supplements appear to reduce the risk of falls among women with a history of falling and low blood vitamin D levels living in sunny climates, especially during the winter, according to a new article.

Broadway stars have understudies. Now, an increasingly popular radioactive isotope has its own stand-in. The substance might ultimately improve medical imaging, speed up clinical trials of many drugs and facilitate efforts to develop more individualized medical treatment.

Actual medical error reporting by doctors to hospitals seems to occur less than it should when compared to physicians' views on whether they should report such errors. An earlier, related study found a similar, although smaller, gap between physicians' attitudes and actual actions in the disclosing of medical errors to patients.

A green glow from a fruit fly is giving researchers the green light when they are on the right path in their quest to develop compounds that help prevent cancer. The glow lets researchers know when powerful cancer-prevention signals similar to those spurred by protective chemicals in broccoli, cabbage, and other foods, have been turned on in the organism.

We often read or hear stories about older adults being conned out of their life savings, but are older individuals really more susceptible to fraud than younger adults? And, if so, how exactly does aging affect judgment and decision-making abilities? For a significant number of older adults, measurable neuropsychological deficits do seem to lead to poor decision-making and an increased vulnerability to fraud. Findings also suggest that these individuals may experience disproportionate aging of a brain region critical for decision-making.

Muscle ruptures, ankle sprains and other common minor leg injuries appear to be associated with a higher risk for blood clots in the legs or lungs, according to a new article. Previous studies have shown that major injuries increase the risk for venous thrombosis.