Dr. Cooper discusses mammograms; omega-3 help prevent heart attack; blueberries reduce odds of colon cancer

When should a woman start having regular mammograms? At 40 or 50? That question has triggered a controversy this week and in just a minute you'll hear what Dr. Cooper suggests. Yet another study showing that omega-3 fats can help prevent heart attacks, especially if you have high cholesterol. And guess what? They also increase bone density. We'll also discuss how eating blueberries may reduce your odds of developing colon cancer, and why pregnant women need to make sure they get enough vitamin D.