An interim review of an ongoing epidemiological study by the FDA states that  patients who have taken the diabetes drug Actos for more than a year may have an increased risk of bladder cancer.The warning comes just days after two European countries banned use of the drug. The European Medicines Agency (EMA) has yet to release any guidance on use of Actos. Five-year data show that although there's no overall increased risk of bladder cancer, patients with the longest exposure to and the highes...