Does Vitamin D Really Protect Against Colorectal Cancer?

A serving of salmon contains about 600 IUs of vitamin D, researchers say, and a cup of fortified milk around 100. Cereals and juices are sometimes fortified, too. Check the labels, researchers say, and aim for 600 IUs daily, or 800 if you

The jury’s been out on whether low vitamin D blood levels increase the risk of colorectal cancer. Researchers say a new review involving more than 12,000 people strongly suggests the answer is yes.

(Image credit: Dorling Kindersley/Getty Images/Dorling Kindersley)

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