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Vitamin D overdose or toxicity usually results from taking an excessive amount of vitamin D supplements and not from your diet or too much sun exposure.
According to Katherine Zeratsky, R.D., L.D, a Mayo Clinic nutritionist, the main consequence of vitamin D toxicity is a buildup of calcium in your blood. This causes vomiting, frequent urination, weight loss, poor appetite, constipation, weakness, cardiac arrhythmia and kidney stones.
The recommended daily allowance of vitamin D is 600 international units (IU) for children and most adults. The recommendation for adults over age 70 is 800 IU daily. Above 4,000 IU a day the risk of adverse effects increases.
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Maryann
January 4, 2012 - 6:00pmThis Comment