For those who've read The China Study, note that this is about increasing consumption of vegetables, not decreasing consumption of anything else (including animal protein).
http://www.care2.com/causes/health-policy/blog/who-is-the-we...
By the way, nothing wrong with fat in our diets, unless is tran-fats or excess omega 6 PUFAs (typically seed oils). Please read Gary Taubes also.