Beta-carotene is an important nutrient that aids in physical development and body function. Like any vitamin or nutrient, it can be detrimental when consumed in large amounts. Consult your doctor before taking supplements and always follow the manufacturer's instructions carefully to avoid negative side effects. For maximum safety and effectiveness, get beta-carotene from food sources whenever possible.
Identification
Beta-carotene belongs to a family of chemical substances known as carotenoids. It is responsible for the pigment of orange and red fruits and vegetables, such as carrots, tomatoes and sweet potatoes, and is also found in leafy green vegetables like spinach. Beta-carotene is converted into vitamin A , which plays an important role in eye health, immunity and healthy skin. It also has antioxidant properties, which protect the body from potentially damaging substances called free radicals.
Toxicity
Although beta-carotene is safe when consumed from food sources as part of a balanced diet, supplement overdose can cause some unpleasant side effects. The most commonly experienced side effect of beta-carotene toxicity is yellowing of the skin. Others include loose stools, bruising and joint pain. Long-term, high-dose use of beta-carotene may increase chance of early death and prostate cancer in men, according to MedlinePlus. Because its effects on unborn babies are unknown, pregnant women should not take beta-carotene supplements unless advised to do so by their doctor.
Recommended Dosage
Like all vitamins and nutrients, the recommended dosage of beta-carotene depends on variety of factors. Healthy, normal children should obtain their beta-carotene from food sources. Adults may take supplements, if needed. For general health purposes, take 15 to 50 mg of beta-carotene per day. According to MayoClinic.com, supplements that are water-soluble tend to be more effective than gel capsules. Five servings of fruit provides 6 to 8 mg of beta-carotene, so always take dietary intake into account.
Special Considerations
If you are a smoker, you should be especially careful to limit your beta-carotene intake. According to the University of Maryland Medical Center, beta-carotene supplementation may increase your chances of developing lung cancer if you are a smoker. If you have been exposed to asbestos or have had an angioplasty, you should also avoid beta-carotene supplements. Beta-carotene may also interfere with cholesterol-lowering medications, as well as niacin supplements.
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