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Vitamins

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Summary

Vitamins are substances that your body needs to grow and develop normally. There are 13 vitamins your body needs. They are

You can usually get all your vitamins from the foods you eat. Your body can also make vitamins D and K. People who eat a vegetarian diet may need to take a vitamin B12 supplement.

Each vitamin has specific jobs. If you have low levels of certain vitamins, you may get health problems. For example, if you don't get enough vitamin C, you could become anemic. Some vitamins may help prevent medical problems. Vitamin A prevents night blindness.

The best way to get enough vitamins is to eat a balanced diet with a variety of foods. In some cases, you may need to take vitamin supplements. It's a good idea to ask your health care provider first. High doses of some vitamins can cause problems.

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  • From the National Institutes of Health (National Institutes of Health, Office of Dietary Supplements)
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  • From the National Institutes of Health (National Institutes of Health, Office of Dietary Supplements)
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  • (Academy of Nutrition and Dietetics)
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  • (U.S. Preventive Services Task Force) - PDF

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  • From the National Institutes of Health (National Institutes of Health)
  • From the National Institutes of Health (National Institutes of Health)

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  • (Academy of Nutrition and Dietetics)
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  • (Mayo Foundation for Medical Education and Research)
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