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How Tears Go 'Pac-Man' To Beat Bacteria

Each tear you shed contains an army of enzymatic Pac-Men, ready to chase down and gobble up germs before they infect the sensitive tissues around your eye. Now scientists have found just one molecule of the germ-fighting enzyme is a potent defender.

Dissolvable Tobacco Products Draw FDA Scrutiny

Supporters of the product say they help quit smoking. Opponents maintain it's a gateway to cigarettes. Both groups are making their case to the Food and Drug Administration, which is studying the flavored melt-in-your-mouth products.

Spot Quiz: Name The Health Issue That Affects 1 In 5 Americans

A new report from the federal government says 20 percent of Americans have this health condition each year. Do you know which one it is?

New Restrictions On Abortion Almost Tied Record Last Year

The 69 new laws limiting reproductive rights in 2011 were one short of the record set in 1999. And action is already heating up for 2012, with several states looking at "personhood" ballot amendments, which define life as beginning at fertilization.

When, And How, To Ask For A Second Medical Opinion

When faced with a major medical decision, it can be difficult for patients to determine when it's appropriate to seek a second opinion. Asking another doctor can help catch misdiagnoses or prevent unnecessary treatments, but they can also be a waste of time and resources.

Stories About High Health Care Costs Win Prizes

A nonprofit group that's trying to get doctors and other health professionals to be more thoughtful about health costs just named winners in an essay contest. Two essays by patients suggest haggling over prices and questioning the necessity of some care can pay off.