Dose vitamin D: Vitamin d comes from exposure to sun made in skin less exposure due to fears of skin cancer leave a deficient state in 60 to 80 percentgeneral requirements in healthy non pregnant state vary between 10000 to 2000 units a say best taken with food down side is very little lots of people require to go upto 5000 units helps skeletal health muscle mass skin nails hair and decreses some cancers.
Answered 11/27/2017
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