HEALTH AND WELLNESS

Turning off a gene that has been associated with Alzheimer’s disease made mice smarter in the lab, researchers said on Sunday in a finding that lends new insight on learning and may lead to new drugs for memory problems.

A genetic mutation that raises the risk of breast cancer is found in up to 60 percent of U.S. women, making it the first truly common breast cancer susceptibility gene, researchers reported.

Nicaraguan police seized 6,000 tubes of a Chinese-made toothpaste suspected of containing a chemical that killed at least 51 people in nearby Panama last year, the health minister said.

When it comes to ice cream, Americans have trouble saying no. Fortunately, manufacturers recognize that we're trying to watch our waistlines.

The federal government is undertaking the most ambitious set of studies ever mounted under a controversial arrangement that allows researchers to conduct some kinds of medical experiments without first getting patients' permission.