What evidence is there that the variations in individual nutritional needs are significant enough that it is worth evaluating them? It seems far more common for health problems to arise from people failing to abide by (relatively basic) generalised nutrition guidelines.
What evidence is there that the variations in individual nutritional needs are significant enough that it is worth evaluating them? It seems far more common for health problems to arise from people failing to abide by (relatively basic) generalised nutrition guidelines.