3 doctors weighed in:

What are the deficiencies of vitamins?

3 doctors weighed in
Dr. Milton Alvis Jr
Preventive Medicine
1 doctor agrees

In brief: Unclear Ques.&Answer

Vitamins are specific, generally small molecules so common in so many things which humans eat that humans have not maintained all genes to make all proteins to manufacture them from other molecules; generally missing just 1 step.
Deficiency rare unless only extremely restricted/processed foods or internal problem; the basis for discovery of most. Vit D low in majority with little sun exposure.

In brief: Unclear Ques.&Answer

Vitamins are specific, generally small molecules so common in so many things which humans eat that humans have not maintained all genes to make all proteins to manufacture them from other molecules; generally missing just 1 step.
Deficiency rare unless only extremely restricted/processed foods or internal problem; the basis for discovery of most. Vit D low in majority with little sun exposure.
Dr. Milton Alvis Jr
Dr. Milton Alvis Jr
Thank
Dr. Saptarshi Bandyopadhyay
Internal Medicine - Hospital-based practice

In brief: Many vitamins

Vitamins are naturally made chemicals that humans need 4 proper growth, metabolism, & repair (in short, good health).
There r many types of vitamins & they are designated by letters (vitamins A, B12, K, for example). Many vitamins aren't made by the body (u get from foods or as medicine). The symptoms of deficiency depends on the vitamin that is deficient so there is no easy answer to ur question.

In brief: Many vitamins

Vitamins are naturally made chemicals that humans need 4 proper growth, metabolism, & repair (in short, good health).
There r many types of vitamins & they are designated by letters (vitamins A, B12, K, for example). Many vitamins aren't made by the body (u get from foods or as medicine). The symptoms of deficiency depends on the vitamin that is deficient so there is no easy answer to ur question.
Dr. Saptarshi Bandyopadhyay
Dr. Saptarshi Bandyopadhyay
Thank
Read more answers from doctors