 The dietary recommendations of countries that rely on their health departments to formulate them, rather than their agriculture departments, more closely parallel the recommendations of academics, such as Walter Willett, the chair of Harvard's nutrition department, who, in his Essentials of Healthy Eating Guide, talks about picking the best protein packages, recognizing that food is a package deal, and so one of his top three recommendations is that we should emphasize plant sources of protein rather than animal sources. See, to the metabolic systems engaged in protein production and repair, it doesn't matter whether amino acids come from animal or plant protein. However, protein is not consumed in isolation. Instead, it is packaged with a host of other nutrients, the baggage I referred to in previous videos. The quality and amounts of fats, carbohydrates, sodium of the nutrients, and the protein package may influence long-term health. For example, results from the Harvard Nurses' Health study suggest that eating more protein from beans, nuts, seeds, and the like, while cutting back on refined carbohydrates like white flour, reduces the risk of heart disease. So the bottom line? Go with plants. Eating a plant-based diet is healthiest.