This is advice from 2,000 years ago, but it's still incredibly relevant. Every day I learn of more people that I know that are sick with diseases of affluence, diseases that can be prevented largely by what we choose to eat.
Again from my man T. Colin Campbell and his amazing book The China Study, pp. 345-346:
"How did Seneca, one of the great scholars 2,000 years ago, a tutor and advisor to Roman Emperor Nero, know with such certainty the trouble with consuming animals when he wrote:
An Ox is satisfied with the pasture of an acre or two: one wood suffices for several Elephants. Man alone supports himself by the pillage of the whole earth and sea. What! Has Nature indeed given us so insatiable a stomach, while she has given us so insignificant bodies?"