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Fat cells may shrink or grow in size, but not in number, a new study shows.

The findings, published in the advance online edition of Nature, hint that it might be possible to create new weight loss drugs that reduce the number of fat cells.

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By MIKE STOBBE, AP Medical Writer 2 hours, 25 minutes ago

ATLANTA - People who sleep fewer than six hours a night — or more than nine — are more likely to be obese, according to a new government study that is one of the largest to show a link between irregular sleep and big bellies.

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MIAMI (CBS4) ? There is some encouraging news for people trying to give up cigarettes. New research shows some of the damage done by smoking can be undone within years after a person quits.

Smoking kills millions every year which is why Gretchen Harris gave up cigarettes a few weeks ago and she's determined to stick with it.

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