How do they decide what your daily intake of vitamins should be?

Answer by  karengtr (26)

The Government developed an agency during WWI to determine "estimated average requirements" and "recommended daily allowances" of vitamins and minerals for the general population. These allowances and requirements are meant to satisfy the needs of the majority. More specific requirements for individuals are based on age and gender.

Answer by  mrandy (140)

Daily vitamin intake depends on your gender, weight, life style and even genotype. But most health organizations provide healthy average. For example recoomended daily intakes for 2000 calories consuming individuals are Vitamin C 75mg, A 0.6mg, B1 1.4mg, B2 1.6mg, B3 18mg, B5 6mg, B6 10mg, B12 6ng, D 5 ng, 10mg, K 80ng.

Answer by  dzac (18)

Doctors decide someone's required daily vitamin intake based on someone's age and weight. Someone that weighs more will need more of a vitamin for it to have the same effect.