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Despite its name, vitamin D is not a vitamin but a hormone or prohormone. An adequate intake of vitamin D may support good immune function and reduce the risk of autoimmune diseases.
There is no general agreement about the intake levels at which vitamin D may cause harm. From the IOM review, "Doses below 10,000 IU/day are not usually associated with toxicity, whereas doses equal to or above 50,000 IU/day for several weeks or months are frequently associated with toxic side effects including documented hypercalcemia."
Vitamin D toxicity, or hypervitaminosis D, is the toxic state of an excess of vitamin D. The normal range for blood concentration of 25-hydroxyvitamin D in adults is 20 to 50 nanograms per milliliter (ng/mL).
The scam originally targeted Japanese tourists due to the high price of honeymelon (cantaloupe) in Japan. The scammer may receive upwards of $100 for "compensation". [ 40 ] [ 41 ] The scam has also been called broken glasses scam or broken bottle scam where the scammer will pretend the mark broke a pair of expensive glasses or use a bottle of ...
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A review of clinical trials in the treatment of colds with small and large doses of Vitamin C has established that there is no evidence that it decreases the incidence of common colds. [28] After 33 years of research, it is still not established whether vitamin C can be used as a treatment for cancer. [29]
The Institute of Medicine in 2010 recommended a maximum uptake of vitamin D of 4000 IU/d, finding that the dose for lowest observed adverse effect level is 40,000 IU daily for at least 12 weeks, [25] and that there was a single case of toxicity above 10 000 IU after more than seven years of daily intake; this case of toxicity occurred in ...
Two NAI-sponsored studies [20] mention that the fruit and vegetable powders in Juice Plus include standardized levels of natural β-carotene derived from Dunaliella salina and soy-derived d-α-tocopherol (vitamin E), which are supplied by the Henkel Corporation (now doing business as Cognis Corporation), [21] [22] and ascorbic acid derived from ...