AP - In a new and disturbing twist on the obesity epidemic, some overweight teenagers have severe liver damage caused by too much body fat, and a handful have needed liver transplants.

Reuters - Scientists reported this week new evidence that low doses of the chemical bisphenol A (BPA), widely used to make plastic food and drinking containers, can impair brain function in primates, extending the findings of previous research conducted in rats.

Reuters - Women with newly diagnosed breast cancer who get an MRI scan wait about three weeks longer before their surgery and are far more likely to get a mastectomy than women who have only a mammogram, U.S. researchers said on Saturday.

AFP - With nearly half the world's human bird flu deaths, concern is building over Indonesia's refusal to share virus samples and its health minister's increasingly strident denunciations of global "conspiracies".

AP - A radioactive tracer that "lights up" cancer hiding inside dense breasts showed promise in its first big test against mammograms, revealing more tumors and giving fewer false alarms, doctors reported Wednesday.