Beta carotene is a component of vitamin A that can be found in a broad range of foods, from wheat to carrots. Beta carotene offers a variety of nutritional benefits and is required for optimal health, but it is possible to consume too much beta carotene. An excess of beta carotene can cause serious side effects, so consult a doctor if you suspect you have consumed too much beta carotene.
Functions of Beta Carotene
According to the National Library of Medicine, beta carotene offers a large number of physiological benefits, including reducing the risk of breast cancer, treating macular degeneration and other eye conditions, and preventing bronchitis in those who smoke. Beta carotene may also help prevent sunburns if you are sensitive to sunlight.
Carotenodermia
Despite the benefits of beta carotene, consuming too much is unhealthy. One common side effect of excess beta carotene is carotenodermia, or a discoloration of your skin that gives it a yellowish color. However, your skin should return to a normal color once you stop consuming excess beta carotene, and it does not cause any serious health problems.
Increased Lung Cancer Risk
Beta carotene can be detrimental for your health if you currently smoke. A review of studies published in the July 2008 issue of the research journal "Cancer" indicates that consumption of between 20 and 30 mg of beta carotene each day may promote an increased risk of lung cancer risk among smokers.
Sources of Beta Carotene
Beta carotene is available in supplements, but you can obtain enough from your diet because it's available in a wide array of foods. Carrots, spinach, kale, cantaloupe, apricots and papaya are among the foods that are highest in beta carotene. You can also find beta carotene in oatmeal, tomato juice, peaches, mangoes and sweet red peppers.
References
- MedlinePlus Supplements; Beta Carotene; November 2010
- Linus Pauling Institute at Oregon State University; Vitamin A; June 2009
- "Cancer"; Beta Carotene in Multivitamins and the Possible Risk of Lung Cancer Among Smokers Versus Former Smokers: A Meta-Analysis and Evaluation of National Brands; T. Tanvetyanon, et al.; July 2008
- National Institutes of Health Office of Dietary Supplements; Dietary Supplement Fact Sheet: Vitamin A and Carotenoids; April 2006
Member Comments