"One problem is that diets rich in animal protein put you high on the food chain, not a good place to be.... One consequence of eating high on the food chain is that you take in much larger doses of toxins, because environmental toxins concentrate as you move up from level to level. The fat of domestic animals often contains high concentrations of toxins that exist in much lower concentrations in grains, for example. An independent problem is that the methods we use for raising animal sources of protein further load them up with unhealthy substances." — Andrew Weil, SPONTANEOUS HEALING