Hair loss is a serious cosmetic concern and an embarrassment for many individuals. With many "cures" on the market for baldness, it is hard to find an effective treatment. Depending on the cause of your hair loss, there may not be one. One popular vitamin promoted for its supposed ability to encourage hair growth is biotin -- a B vitamin. Always consult your physician before taking any new supplement or medication.
About Biotin
Biotin, or vitamin B7, is a nutrient found in small amounts in certain foods including yeast, cheddar cheese, liver, salmon, avocado and raspberries. Biotin is a component of five enzymes within the human body, and is involved in the formation and metabolism of fats, carbohydrates and amino acids. At present, there is no Recommended Daily Allowance (RDA) for biotin. However, according to the Mayo Clinic, adolescents and adults should consume between 30 and 100 mcg of biotin per day.
Biotin Deficiency
The symptoms of biotin deficiency include hair loss, unusual facial fat distribution and a red, scaly rash around the face and genital area. Other symptoms include hallucination, lethargy, depression and abnormal sensations in the extremities. Biotin deficiency is extremely rare since the body needs very little and the vitamin in available from multiple dietary sources. However, several conditions, including genetic disorders and intravenous feedings, can lead to the development of biotin deficiency.
Hair Growth
Because hair loss is a symptom of biotin deficiency, vitamin B7 supplements are sometimes promoted as a cure for hair loss. According to the Linus Pauling Institute and the Mayo Clinic, there is no evidence to suggest that biotin supplements are an effective treatment for alopecia or genetic hair loss. The National Institutes of Health reports that in some cases biotin may be effective in combination with zinc and topical application of a chemical called clobetasol propionate.
Considerations
Biotin supplements are readily available over the counter at most pharmacies. There are no known interactions with biotin and other medications or herbal supplements. Consult your health care provider to determine an appropriate dose. Keep in mind that it is always preferable to get your vitamins and minerals from natural, dietary sources.
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