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Are there any risks in using selenium?

Using selenium can be risky if you take too much. Most people get enough selenium from the foods they eat, so it is not difficult to get too much selenium by taking supplements.

Too much selenium can be toxic and lead to serious side effects that require medical attention. These include diarrhea, fatigue, nausea and vomiting, skin itchiness, irritability, loss of hair, weakening of fingernails, and a garlic-like odor of the breath and perspiration.

In addition, because of the risk of adverse reactions, people with the following medical conditions should not take selenium: stomach or kidney problems, iodine deficiency, male infertility, or a history of skin cancer.

Continue Learning about Selenium

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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.