Congress wants more information from the drug company Merck on a possible link between the popular cholesterol drug Vytorin and cancer. Data from the company's own research showed more patients given the drug were diagnosed with the disease compared with those taking a placebo. Of nearly 19-hundred patients, there were 105 cancer cases among Vytorin-users and 70 among those taking a sugar pill. Company officials maintain the increase is due to chance.

Exercise may help prevent age-related memory loss. As Australian study's found people age 50 and over at risk for dementia made modest improvements in brain function after increasing their physical activity. And the longer they stuck with the exercise, the more their test scores improved.

The battle over blood pressure may start earlier than we thought. Researchers say babies who gain weight quickly in their first, few months may be at higher danger of suffering from hyper-tension as adults. Experts have been trying to understand more of the causes of high blood pressure, low birth weights have also been associated with hypertension later in life.