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MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). It was built as an online health information resource for patients and their families and friends.

MedlinePlus presents high-quality, easy to understand, relevant health and wellness information that is trusted.

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Tanning - National Library of Medicine

... UV rays do help your body make vitamin D, but too much exposure damages your skin. Most people can get the vitamin D that they need with only about 5 to ...

Vitamins - National Library of Medicine

... vitamin B-12 and folate) Vitamin C Vitamin D Vitamin E Vitamin K You can usually get ... you eat. Your body can also make vitamins D and K. People who eat a vegetarian diet ...