2/21/2023 0 Comments Olly vitamins side effects![]() ![]() If you are taking regular vitamin supplements, or thinking about it, ask your doctor before doing so.Īnd by the way, 100 grams of spinach has healthy amounts of vitamins A, C, E, K, several B vitamins, and essential minerals including iron and calcium. So what should one do? Ignore the marketing, and treat supplements like you would any other medicine: take them with caution. Vitamins don't "boost your immune system," they don't promote joint health, they don't reduce stress, and they don't help prevent colds or other common ailments. Our intuitions aren't always right: just because a little bit of something is good for you does not mean that a lot of it is even better. On the evidence, supplementing your diet with any of these 5 vitamins carries little or no benefit, and may cause you harm. Death, one must admit, is a pretty bad outcome. With nearly 40% of Americans taking a multi-vitamin, they must be good for you, right? But a huge study that I wrote about last year, looking at 38,772 women over 25 years, found that the overall risk of death increased with long-term use of multivitamins, vitamin B6, folic acid, iron, magnesium, zinc, and copper. But taking high levels of vitamin B6 from supplements for a year or longer can cause severe nerve damage, leading people to lose control of their bodily movements."ĥ. "People almost never get too much vitamin B6 from food. But taking B6 supplements for a long time can be harmful, as NIH's website explains*: The B vitamins, including B6 and B12, are present in many foods, and deficiencies are rare. "Evidence suggests that regular use of high-dose vitamin E may increase the risk of death from all causes by a small amount."Ĥ. The Mayo Clinic summarizes the evidence this way: In an even larger review done at Johns Hopkins University, Edgar Miller and Lawrence Appel found that the overall risk of death was higher in people who took vitamin E. The authors found that the risk of cancer increased for men taking vitamin E. A large study last year, of 35,533 men, looked at vitamin E and the risk of prostate cancer. Long touted as an anti-cancer agent, vitamin E is a very popular supplement. Antarctic explorer Douglas Mawson barely survived, and his companions died, probably of vitamin A poisoning.ģ. Perhaps the most famous cases of vitamin A toxicity occurred in early polar explorers, who ate the livers of their sled dogs, not realizing that the livers had excessively high amounts of vitamin A. Vitamin A plays an important role in vision, but too much vitamin A can be toxic, causing multiple serious side effects. The evidence doesn't support this: for example, in a large study supported by the National Cancer Institute*, smokers who took vitamin A were more likely to get lung cancer than those who didn't. Vitamins A, C, and E are all anti-oxidants, which have been promoted for their supposed anti-cancer properties. throws doubt on the utility of this wide practice."Īlthough Vitamin C is generally safe, megadoses of 2000 mg or more can increase the risk of kidney stones, which can be excruciatingly painful.Ģ. This question has been studied exhaustively: a review in 2005 covering 50 years worth of research concluded that Although Pauling was a brilliant chemist (and Nobel laureate), he was completely wrong about vitamin C, as Paul Offit explains in detail in his new book, "Do You Believe in Magic?" Vitamin C gained its current popularity through the woefully misguided efforts of Linus Pauling, who published a book in 1970 recommending mega-doses of C to prevent the common cold. Way back in the 1700's, Scottish doctor James Lind famously conducted an experiment that proved that citrus fruit cured scurvy, although vitamin C itself wasn't discovered until the 1930s. In the early days of global exploration, sailors often died from scurvy, caused by the lack of vitamin C. Perhaps the most popular single vitamin supplement, vitamin C occurs in plentiful amounts in many fresh fruits and vegetables. So here are the top 5 vitamins that you should not take (unless your doctor recommends it):ġ. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |