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Why do we need sunlight for good health?

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  1. Dr. David Katz
     
    Dr. David Katz answered:
    Studies indicate vitamin D may influence the absorption of calcium in the intestine and the immune system, helping to defend against cancer, especially colon cancer. Our skin manufactures vitamin D when exposed to sunlight.
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    Studies indicate vitamin D may influence the absorption of calcium in the intestine and the immune system, helping to defend against cancer, especially colon cancer. Our skin manufactures vitamin D when exposed to sunlight. More

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