Huge study starting on vitamin D & fish oil

Two of the most popular and promising dietary supplements - vitamin D and fish oil - will be tested in a large, US government-sponsored study to see whether either nutrient can lower a healthy person's risk of getting cancer, heart disease or having a stroke.

"If something as simple as taking a vitamin D pill could help lower these risks and eliminate these health disparities, that would be extraordinarily exciting," said Dr. JoAnn Manson. "Vitamin D and omega-3s have powerful anti-inflammatory effects that may be key factors in preventing many diseases. They may also work through other pathways that influence cancer and cardiovascular risk," Manson said.

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