How much vitamin D is too much?

Children's Health, Men's Health, Nutritional Health, Parenting, Woman's Health
Now that so many more people are taking vitamin D, some are asking how much vitamin D is too much. And, it’s important to note that vitamin D doses vary widely and toxicity is rare. Here are some guidelines recommended to healthcare professionals from the evidence-based experts at The Prescriber’s Letter: To prevent deficiency, recommend 1000 to 2000 IU/day of vitamin D for adults and 400 IU/day for infants and children. Most people will need supplements. We don't get much vitamin D from the sun these days due to sunscreens, staying indoors, etc. Diet usually isn't enough, either. Very few foods contain vitamin D ... and milk only contains only 100 IU per cup. Higher doses are needed to maintain adequate levels in some patients ... or to treat a…
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Adults may need up to twice the amount of vitamin D than is typically recommended

Men's Health, Nutritional Health, Woman's Health
Here’s news about a new guideline that will change something I do in practice. The Los Angeles Times "Booster Shots" blog reported, "Older adults need up to twice the amount of vitamin D than is typically recommended, according to guidelines released Monday by the International Osteoporosis Foundation." The guidelines "urged adults, defined by this group as 65 and older, to aim for a 25-OHD blood level – the primary marker for vitamin D in the blood – of 75 nanomoles per liter. In our community, physicians have been aiming for a vitamin D level of 50. So, the new guideline will be a new practice for me. To reach that level, one would need an intake of 20 to 25 micrograms per day (or 800 to 1,000 international units) of…
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FDA warns against giving infants more than 400 IU of vitamin D

Children's Health, Nutritional Health, Parenting
The Los Angeles Times "Booster Shots" blog reported, "The Food and Drug Administration (FDA) ... warned parents about the dangers of giving infants more than 400 international units (IU) of vitamin D." Indeed, "supplementation is recommended for some infants, especially those being breastfed, because a deficiency can lead to bone problems, such as thinning, soft and misshapen bones." But, "overdoses ... can cause nausea and vomiting, loss of appetite, excessive thirst, frequent urination, constipation, abdominal pain, muscle weakness, muscle and joint aches, confusion and fatigue, as well as more serious consequences such as kidney disease." Notably, "many of the vitamin D supplements in stores use droppers that could allow anyone to accidentally give harmful amounts of the vitamin to a baby," according to the CNN "Paging Dr. Gupta" blog. Therefore,…
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