Actually, it is the collective mass of those who have seen skin problems associated with diet and environmental factors. I believe more in it due to some people who got EC from accutane use, then saw it go away after 3 days while they went on a juice diet. But it came back once they went back to unhealthy foods. It is funny when some people comment something is crazy, I find literature proving it to be effective.
I appreciate White Shark's interest in sharing the knowledge to teach others.