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A meta-analysis found that people on vegetarian diets lost around 4.4 pounds more than the control group who had no change in diet. Those who tried a vegan diet dropped 5.5 pounds more.

Medicaid expansion was a big deal in a handful of state legislatures this year. Wyoming said no. Tennessee said no. But Montana said yes, and three more states are coming down to the wire.

To get his young patients moving, Dr. Robert Zarr whips out his pad and prescribes a park. And not just any park. One chosen for the child from a 380-park database.

Companies say it pays to invest in employee health — productivity climbs and many costs of health care drop. But preserving worker privacy while encouraging fitness can be tricky.

In response to the crisis in lengthy wait times for medical care, Congress and veterans groups again are debating the proper role of private sector solutions.

Research shows narcissists can be induced to make environmentally positive purchases when those purchases are linked to the things narcissists value — prestige, status and image.

An open revolt among moderate Kansas Republicans has clouded Gov. Sam Brownback's re-election hopes and focused national attention on the tax-cutting experiment at the heart of his "red-state model."

The chairman of the Republican Party suggests there's room for both immigrant-friendly and anti-immigrant voices in his party. His comments come as the GOP struggles to court minorities.

Companies are clamoring for coverage against losses due to hackers. But insurance firms are being selective: The risk involved isn't well understood — and the crimes themselves are evolving rapidly.

While many around the country — including President Obama — have spoken out about the death of Trayvon Martin, George Zimmerman, the shooter, has yet to speak publicly about what happened.