The Washington Post reports that popular diabetes drug Avandia has been shown to increase heart risks, according to an FDA study and a report published in a medical journal.The study confirms that 60,000 to 100,000 reported heart attacks from Avandia users may be linked to the drug, which has been on the market for 8 years.Avandia's manufacturer GlaxoSmithKline PLC, a British company, has sold...