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The FDA has reversed a 2010 decision and approved the diet drug Belviq.

The Supreme Court is set to rule on whether the president's health care law is constitutional. Chief legal correspondent Jan Crawford reports on the arguments leading up to the big decision.

Researcher likens vaccine's antibodies to "Pacmen that like nicotine and just gobble it up" before it reaches the brain, preventing addictive sensation

The Food and Drug Administration approved the first prescription diet drug in a decade. Belviq acts on the area of the brain that controls appetite and metabolism. Susan McGinnis reports.

Diet consists of not that heavily processed grains and natural carbs, proteins and healthy fats; Foods take longer to digest and release sugar slower

Federal Food and Drug Administration officials approved a new weight-loss pill Wednesday, giving the nod to Belviq used in combination with a reduced-calorie diet and exercise to combat obesity.

Anti-obesity pill Belviq is the first prescription drug for long-term weight loss to get U.S. approval in over a decade

Lead researcher on new study says quality of fats and carbs should be focus of achieving long-term weight loss

China's first female astronaut, Liu Yang, performs a Tai Chi routine during a night shift on the Tiangong - 1 Space Lab Module. Regular exercise is crucial for astronauts in space.

About 1.2 million Americans are living with HIV - but about one in five of them don't know they're infected

Doctor says child was born with a lump that eventually covered the right side of his body from his armpit to his hip

You won't believe what doctors caught on camera with medical imaging - Take a look for yourself

A roundup of reactions to the death of author, screenwriter and director Nora Ephron, who died Tuesday at the age of 71:

Through electroencephalogram tests, researchers found 33 "factors" that distinguished the children with autism from their counterparts

Researchers found that overweight people burned 350 more calories a day, on average, when they ate a low-carbohydrate diet, than when they ate a low-fat diet.