My friend who was told she had fibromyalgia turned out to have MS instead. I certainly hope that's not the case with the person you know whose health improved, but a remission in her symptoms doesn't actually prove cause and effect - just saying!
Also, every pyramid eventually has to collapse, even if your potential buyers included the entire planet. It's just not likely to pan out in the long run.
You can learn everything there is to know about good, healthy food without spending money. In fact, you probably already know all there is to know about healthy food: eat lots of fresh fruit and vegetables every day and stay away from processed food, sugars and refined starches. Don't eat too much fat or too much meat. If you want to drink your veggies, dump them into a blender and hit puree. Where is the magic in that that makes people haul out their wallets?