Although you only require them in small amounts, vitamins play an essential role in your health and carry out a range of roles that include supporting your metabolism and strengthening your tissues. A few vitamins -- such as vitamin B-1 and B-2 -- don't pose a health risk even in large amounts, but others can negatively affect your health if you consume too much. If you take vitamin supplements, consult your doctor so that you can avoid an accidental vitamin overdose.
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biotrust.comVitamin A
One of the most potentially toxic vitamins is vitamin A. As a fat-soluble vitamin, excess vitamin A dissolves in your fatty tissue and accumulates over time, which can pose a serious risk to your health. Hypervitaminosis A -- the condition brought on by vitamin A overdose -- causes your skin to crack, peel and itch. It also leads to bone pain, damages your liver and causes fluid to accumulate in your brain, which can prove fatal. To avoid side effects, limit your vitamin A intake to 10,000 international units daily, advises the Institute of Medicine.
Vitamin D
Too much vitamin D also harms your health -- like vitamin A, it dissolves in fat and accumulates in your system. Because vitamin D plays an important role in helping your body use calcium properly, high levels of vitamin D can negatively affect your calcium levels. Too much vitamin D increases the amount of calcium in your blood, which can lead to calcium deposits in tissues throughout your body. It also removes calcium from your bones, causing bone damage. Don't exceed a daily vitamin D intake of 4,000 international units, recommends the Institute of Medicine.
Vitamin E
Fat-soluble vitamin E can also threaten your health if you take too much. Normally, vitamin E plays a beneficial role in cardiovascular health by helping to regulate blood clot formation. However, too much vitamin E can excessively thin your blood, increasing the risk of internal bleeding. Taking high doses of vitamin E supplements might increase the risk of death from cardiovascular disease, but the Linus Pauling Institute explains that studies into the risks of vitamin E have yielded conflicting results. To avoid the possibility of side effects, don't consume more than 1,500 IU of vitamin E daily, recommends the Institute of Medicine.
B-Complex and Vitamin C
Vitamin C and the B-complex family of vitamins dissolve in water, and your system can flush excess vitamin each day. However, some of these vitamins still cause side effects if you consume too much. Large doses of vitamin B-3 supplements can damage your liver and lead to a burning sensation in your skin, while too much vitamin B-6 can cause nerve damage over time. Excess amounts of vitamin B-9 don't cause symptoms directly, but they can hide the early signs of a vitamin B-12 deficiency, preventing a proper diagnosis, and put you at risk of nerve damage caused by low B-12 levels. Too much vitamin C can cause digestive upset, and might increase the risk of kidney stones in some individuals.
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www.shopskin.care/FaceLiftingAbout the Author
Sylvie Tremblay holds a Master of Science in molecular and cellular biology and has years of experience as a cancer researcher and neuroscientist. Based in Ontario, Canada, Tremblay is an experienced copywriter, journalist and blogger specializing in nutrition, fitness, lifestyle, health and biotechnology, as well as real estate, agriculture and clean tech.
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