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The U.S. Food and Drug Administration said that a class of drugs that includes Procter & Gamble's Actonel does not increase the risk of a serious heart condition called atrial fibrillation.

Osteoporosis is a growing concern among breast cancer survivors and their doctors because certain cancer drugs can cause bone loss. But a new study has found that cancer drugs aren't the only culprits. Among 64 breast cancer patients referred to a bone health clinic, 78 percent had at least one other cause of bone loss, such as vitamin D deficiency and an overactive parathyroid gland.