The controlled movement of the Chinese martial art can improve patients' coordination and limit falls, a study finds.

Rubbing sore, overworked areas trips anti-inflammatory switches in the tissue that might speed healing and ease pain.

Negative interactions with others or stressful competition for another’s attention seem to have risky biological effects on an individual. (p. 9)

Patients who have high levels of compounds called TNF receptors in their blood have a heightened risk of developing renal failure, two studies suggest. (p. 15)

Infrequent marijuana users show a slight improvement in breathing capacity and middling smokers had no change, a 20-year study shows. (p. 14)

Treatment enables cells to produce a key blood-clotting compound, allowing some patients to quit medication. (p. 9)

The pests have also developed ways to resist common insecticides, research shows. (p. 17)

Injections of the protein interleukin-2 can calm runaway defenses that damage tissues in the body, two studies show.

CT scans can often reveal a clear cause of death, possibly making some autopsies unnecessary, British researchers find.