A member asked:

What is the most common type of vitamin deficiency?

A doctor has provided 1 answer
Dr. Steven Charlap answered

Specializes in Holistic Medicine

Vitamin D: Although there is quite a debate ranging on what level defines a vitamin d deficiency and therefore it is hard to say precisely how many people actually have one, the lack of sun exposure for many people and poorer conversion among the elderly seems to be making this the number one deficiency.

Answered 4/1/2016

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