Preventative. First I had to cure myself of some lifelong mystery illness that doctors where just "treating" every year, keeping me in the poor house and destroying my health more and more in the process. That is a long story but bottom line I did genetic testing and put myself on a strict elimination diet for 2 years. The elimination cured me of my symptoms but the genetic testing is where I found out what the real problem was. Now I just maintain a healthy lifestyle, avoid the foods that were literally killing me, and I'm doing great. Same was done for my husband except we knew his problems, and with western medicine treatments it was only getting worse. A simple dietary change cured him. It's amazing to know that almost every ailment bothering people is caused by, and cured by: diet and environmental exposure. (environmental exposure is everything we touch, consume, and breath and the vast majority of our toxic environmental exposure is coming from things we voluntarily buy from the store and eat or rub on ourselves.) It's our modern way of life that's killing us.