Vitamin D Council . This is called vitamin D toxicity. Vitamin D toxicity, where vitamin D can be harmful, usually happens if you take 4. IU per day for a couple of months or longer, or take a very large one- time dose. Vitamin D is fat- soluble, which means your body has a hard time getting rid of it if you take too much. When you take large amounts of vitamin D, your liver produces too much of a chemical called 2. OH)D. When your 2. OH)D levels are too high, this can cause high levels of calcium to develop in your blood. High blood calcium is a condition called hypercalcemia. The symptoms of hypercalcemia include: feeling sick or being sickpoor appetite or loss of appetitefeeling very thirstypassing urine oftenconstipation or diarrheaabdominal painmuscle weakness or painbone painfeeling confusedfeeling tired. In some rare diseases, you may be at risk of hypercalcemia even if you have low vitamin D levels and haven’t taken much vitamin D. These diseases include primary hyperparathyroidism, sarcoidosis and a few other rare diseases. See our Hypersensitivity page page for more information. How do I know if I have taken too much? A blood test to measure your 2. OH)D levels can tell you whether you have too high of vitamin D levels. If your 2. 5(OH)D levels are above 1. You know if your 2. OH)D levels are toxic by a blood test to measure calcium. If calcium is high and 2. OH)D is high, then you are getting too much vitamin D. Very high levels of 2. OH)D can develop if you: take more than 1. IU/day (but not equal to) everyday for 3 months or more. However, vitamin D toxicity is more likely to develop if you take 4. IU/day everyday for 3 months or more. IU in a 2. 4 hour period. If you have taken this much vitamin D, seek medical attention. Your health providers will get your calcium and 2. OH)D levels tested. The current recommended daily allowances for vitamin D set by the Food and Nutrition Board are conservative, so you don’t need to feel worried about toxicity if you take more than their recommended daily allowance. You can find out more about daily vitamin D supplementation on our page, How do I get the vitamin D my body needs? What should I do if I think I have taken too much vitamin D? Have you taken more than 3. IU in the past 2. OR have you been taking more than 1. IU/day for the past three months or longer? If yes, check to see if you have symptoms of toxicity (listed above); symptoms like feeling sick, feeling thirsty, constipation or diarrhea, poor appetite and feeling confused. To explore whether vitamin D supplements could help people shed excess pounds, researchers at Italy’s University of Milan analyzed data from 400 obese or overweight.If so, you may have hypercalcemia and need medical attention. However, you should get a blood test for 2. OH)D and make sure that you do not have a level above 1. Consider lowering your vitamin D dose. See our page How do I get the vitamin D my body needs? If you are still concerned, you may choose to get a blood test to measure 2. Vitamin D has many important jobs in your body. It keeps your bones strong by helping your body absorb calcium and phosphorus, key minerals for bone health. Several forms of vitamin D exist. The two major forms are vitamin D 2 or ergocalciferol, and vitamin D 3 or cholecalciferol; vitamin D without a subscript refers to. OH)D to see what your levels are. See our Testing page for more information. Please see our Hypersensitivity page for more information. What about children? The more you weigh, the more vitamin D your body can handle; the less you weigh, the less vitamin D your body can handle. The above cutoffs of 3. Cholecalciferol, or.
IU in 2. 4 hours or more than 1. IU/day for three or more months apply to average adult weight (1. So, how do you know if your child has gotten too much vitamin D? For children that weigh 2. IU in 2. 4 hours or 2,0. IU/day for over three months is too much and potentially toxic. For children that weigh between 2. IU in 2. 4 hours or 4,0. IU/day for over three months is too much and potentially toxic. For children that weigh between 5. IU in 2. 4 hours or 6,0. IU/day for over three months is too much and potentially toxic. For children that weigh between 7. IU in 2. 4 hours or 8,0. IU/day for over three months is too much and potentially toxic. If your child has taken too much vitamin D, seek medical attention. I already tested my 2. OH)D. Is my level too high? If your level is greater than 1. Seek medical attention if you have symptoms of hypercalcemia (listed above). If you do not have symptoms, consider lowering your level. Please see our pages on 2. OH)D reference ranges and our page on how to get the right amount of vitamin D: If your level is not greater than 1. D. Please read our pages on vitamin D levels and how to interpret your results: References. Cusano NE, Thys- Jacobs S and Bilezikian JP. Elsevier Academic Press, 2. Vieth, R. Vitamin D supplementation, 2. D concentrations, and safety. American Journal of Nutrition, 1. Vitamin D for Bones and Osteoporosis. Vitamin D has many important jobs in your body. It keeps your bones strong by helping your body absorb calcium and phosphorus, key minerals for bone health. Your muscles use it to move, and nerves need it to carry messages throughout your body. But many people don’t get enough vitamin D. Find out the best ways to get what you need and whether a supplement might be a good idea for you. How much vitamin D should you get? The amount you need depends on your age: 6. IU (international units) a day for people ages 1 to 7. IU a day for anyone over 7. Some experts think that these recommendations are too low, especially for people who are more likely to get the bone- thinning disease osteoporosis. Ask your doctor how much vitamin D is best for you. It is possible to get too much vitamin D. Doses above 4,0. 00 IU a day can be harmful for people ages 9 and older. Just 1. 0 to 1. 5 minutes of sunlight without sunscreen a couple of times a week usually gives you enough vitamin D. But it’s also important to protect your skin, since too much time under the sun’s rays can cause skin cancer. When you’re out in the sun for more than a few minutes, it’s best to wear sunscreen or clothing that covers you up. So how else can you get this nutrient? A few foods have it naturally, including. They’re the best source of vitamin D. So the nutrient is important for people with osteoporosis. Studies show that calcium and vitamin D together can build stronger bones in women after menopause. It also helps with other disorders that cause weak bones, like rickets. If you’re concerned about your bone health, ask your doctor if you should think about taking a supplement. People who have low levels of vitamin D also may need supplements. That includes those who: Are over 5. Get very little sun. Have kidney disease or conditions that affect how their bodies absorb minerals. Have darker skin. Are lactose intolerant, meaning they can’t digest the sugar in dairy foods. Are vegan. Are infants who eat only breast milk. Vitamin D deficiency is also common for people living in the northern parts of the U. S. Studies have found prescription- strength vitamin D lotions can help people with psoriasis. Researchers have also studied how it affects other conditions from cancer to high blood pressure, but the evidence is unclear. What are the risks of taking vitamin D? At normal doses, vitamin D seems to have few side effects. But if you take any medications, be careful - - it can interact with many medicines, such as drugs for high blood pressure and heart problems. Ask your doctor if it's safe for you to take vitamin D supplements. Too much vitamin D can cause loss of appetite, the need to pee a lot, and weight loss. High doses of vitamin D can also make you disoriented and cause kidney and heart problems. Sources. SOURCES: Institute of Medicine: . The Gale Encyclopedia of Alternative Medicine, second edition, 2. National Osteoporosis Foundation: . All rights reserved.
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