- Vitamin A is a fat-soluble vitamin; it can be easily dissolved. Vitamin A comes from animal sources and plant sources in the form of beta-carotene.
- Bethany Thayer, M.S., dietitian and spokeswoman for the American Dietetic Association, says beta-carotene found in sweet potatoes and other orange vegetables helps shed old cells and replaces them with new ones for hair growth and a healthy scalp.
- Since vitamin A is an antioxidant and beta-carotene converts to vitamin A, this helps to create healthy sebum in your scalp, which keeps your hair moisturized.
- To stimulate hair growth, eat vitamin A from eggs, cheese, milk and liver. Dark-green, leafy vegetables and orange-colored fruits and vegetables, like carrots and sweet potatoes, provide you with beta-carotene.
- Professor of cardiac surgery at Columbia University and author Mehmet Oz, M.D., recommends you only take up to 2,500 IU of vitamin A daily. Taking more vitamin A can be toxic to your body and can cause hair loss. Beta-carotene is safe to eat in quantity.
- Taking too much vitamin A can cause liver damage and possibly even death.
If you're pregnant, ask your doctor before taking any vitamin A. Large doses of vitamin A can cause birth defects.
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