1000 IU (25 mcg) per day increases vitamin D blood levels 10 ng/ml (25 nmol/L). 2000 IU (50 mcg) per day increases vitamin D blood levels 20 ng/ml (50 nmol/L). If the vitamin D blood test was 30 ...
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3 ways to boost your vitamin D levelsSeveral vitamin D supplements are available to help you maintain your health goals in the colder seasons. In this article: ...
These people may find themselves at risk of vitamin D deficiency, including: Children and teenagers: 600 international units (IU) or 15 micrograms (mcg). Adults up to the age of 70 years old ...
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