A to Z Health Guide 2007

The scientific bulletin of the year may be the stem-cell breakthrough. But 2007 provided a whole alphabet of big medical news. TIME's A-to-Z guide reviews them

By Coco Masters, Alice Park, Carolyn Sayre, Tiffany Sharples, Alexandra Silver and Kate Stinchfield

Diabetes

JB REED / BLOOMBERG NEWS
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The task of keeping diabetes in check has gotten harder. While rosiglitazone, GlaxoSmithKline's (GSK) Avandia, lowers blood-sugar levels, it also increases the risk of heart attack 42% and doubles the risk of heart failure, according to a study in the Journal of the American Medical Association. Other ongoing research, however, does not show such an increased risk. Even so, the FDA has issued a warning label alerting users to increased danger of heart attack, and Canadian officials have restricted the drug to those with hard-to-control blood sugar. GSK will issue a pamphlet explaining the warning and will begin a study next year to compare Avandia with other diabetes drugs.

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