The frontline malaria medicine artemisinin shows gaps in effectiveness in Southeast Asia.

Survey finds that many overweight individuals consider their body size normal and healthy despite having health problems

No one would choose to eat polychlorinated biphenyls, or PCBs — yet we unwittingly do. And a new study finds that the cost of their pervasive contamination of our food supply can be elevated blood pressure, a major risk factor for heart disease.

The findings led to an early halt of a small study comparing Niaspan and Zetia, two compounds commonly used along with statins to reduce heart attack risk.

Prevention could begin with lifestyle in younger years, one researcher says during the American Public Health Association meeting.

Rodent study offers first evidence that neurogenesis clears old memories in key part of the brain to make way for new ones. (p. 10)

Human version of the protein alters activity of 116 genes compared with the chimp version.

A compound that unshackles a tumor-suppressing protein called p53 can slow the growth of the malignancy in mice, a new study finds. (p. 10)