A comprehensive resource that explains sources of vitamin D, how it is produced in the skin and its role in health and diesase.

New research finds that lung cancer rates are higher in regions that receive less sunlight. Read about possible explanations here.

This study looks at actual blood serum levels of vitamin D, rather than latitude, and finds that high vitamin D correlates with area of lower colon and breast cancer rates.

A rich resource for lung cancer patients includes links to treatment centers, support groups, educational content and medical literature.

Find out the RDA of vitamin D for your age and the amounts in various foods.

It's easy to get enough vitamin D without laying out in the sun and increasing your skin cancer risk. Learn your options here.

Other studies have shown that vitamin D might reduce overall risk of many cancers. Read more about this research here.

This study suggests that exposure to sunlight seems to reduce the advanced stages of breast cancer in light-skinned women.

Vitamin D deficiency could increase lung cancer risk, but smoking is still the #1 risk factor. Learn more at the American Lung Association site.

Learn the risk factors for different types of lung cancer. Get information on screening, diagnosis and treatments.