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Today's Top Medical Stories for Monday, April 21, 2014

CNN -- Making health headlines this week: the effects of casual marijuana, obesity and pregnant women, and why cases of diabetes have doubled in the last 20-years.
CNN -- Making health headlines this week: the effects of casual marijuana, obesity and pregnant women, and why cases of diabetes have doubled in the last 20-years.

Many people think smoking an occasional joint is okay, but a new study suggests otherwise.

Researchers enrolled 40 college students in the trial. Twenty smoked marijuana at least once a week, and the others not at all.

After 90-days, they found the more joints smoked, the greater the abnormalities in the areas of the brain that process emotions, motivation and reward.

There's yet another reason to drop some pounds before getting pregnant.

A new study shows overweight or obese women who are pregnant have an increased risk of delivering a stillborn baby.

Researchers say despite that ominous warning, the overall risk is low.

Obesity is already associated with other complications that can lead to an unhealthy fetus.

And diabetes in the u-s has nearly doubled in the past two decades.

That's according to a study in the annals of internal medicine.

Researchers found that diabetes rose from 5.5 to 9.3 percent of the U.S. population in the past 20 years.

They say better screening has helped doctors identify more diabetics, and the percentage of un-diagnosed diabetes has dropped in the last two-decades.


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