When you eat foods that contain fat-soluble vitamins, the vitamins are stored in the fat tissues in your body and in your liver. The Recommended Dietary Allowance (RDA) for vitamins, set by the Food and Nutrition Board of the National Academy of Sciences-National Research Council, has been used for years as a guide for determining the amount of vitamins needed to prevent deficiency diseases.
Excess intake of vitamin A can cause poisoning that can be caused tubuh.Penyakit include dizziness, hair loss, dry scaly skin, and pingsan.Selain it, when it is in a state of acute, excess vitamin A in the body can also cause myopia, inhibition of the growth of the body, swelling of the liver, and skin irritation.
The International Olympic Committee states that no vitamin supplements should be required if the diet is well balanced but athletes do often take them, especially vitamins C, B-complex and E, with a possible danger to their health by overconsumption.
And it’s not just vitamins D and E. The Physicians’ Health Study also looked into vitamin C and a one-a-day multivitamin and found the same results: no impacts on the risk of cancer mortality or the incidence of cardiovascular disease Of course there are exceptions — folic acid is generally a good idea for pregnant women — but the data increasingly suggests that most people simply do not benefit from supplements.
Although studies had failed to support him, Pauling believed that vitamins and supplements had one property that made them cure-alls, a property that continues to be hawked on everything from ketchup to pomegranate juice and that rivals words like natural and organic for sales impact: antioxidant.