Discerning is the answer to your question.
this is not a health question
The best answer for this question would be:
biological and social
Medical anthropologist need to understand the source of their biological heritage and ofcourse the system of their bodies in order to understand their suffering. Social factor is also important, because it can tells them the source of their suffering.
B. Avoid taking supplements unless energy intake is restricted or groups of food are eliminated from their diet