Is taking large amounts of vitamins good for you?

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Taking large amounts of vitamins, any vitamin, can cause problems for the body. Vitamins A, D, E, K in particular can accumulate in the body and cause problems. A simple daily multivitamin has been dosed to not cause problems for the body. Generally speaking, people who eat a well-balanced diet should have no need for taking vitamin supplements. An exception is that a prenatal vitamin has shown to be beneficial to women of childbearing age. Also, people who are taking certain medications may require vitamin supplementation.
A number of vitamins and minerals have been tested in clinical trials to investigate whether taking large amounts could prevent cancer and other diseases. Generally, excessive vitamin levels had no preventive effect and in some cases were associated with increased cancer deaths. The research highlights the importance of sufficient but not excessive intake of vitamins and minerals.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.