A member asked:

What are the causes of vitamin d and iron deficiency besides nutrition?

A doctor has provided 1 answer
Dr. James Shoemaker answered

Specializes in General Practice

Darkness & Bleeding: Avoiding sunlight causes vitamin d deficiency--rickets tends to occur in northern climes in the winter. The main non-nutritional cause of iron deficiency is bleeding, including menstrual blood loss, which is why women are at greater risk for this than men. Men can become iron deficient due to unseen blood loss from stomach ulcers or intestinal cancers.

Answered 11/27/2017

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