Scientists like to study one nutrient at a time, ignoring that in raw, whole foods, this nutrient may be the best nutrient in isolation, but in fact this nutrient only works in combination with several other key nutrients in the raw, whole food. For example, orthodox scientists may study Vitamin A, by itself, instead of the effect of fresh, properly prepared carrot juice. By isolating one substance, they can then generalize that they have proven that the entire natural food has no effect on prevention or treatment.