I did a lot of research on diet, using scripture as the top document, ie; whatever fit the general ideas put forth in the Bible I kept and whatever did not I threw out. For starters avoid bad things, mainly refined sugar, booze, cigarettes of course too, (not that they are usually eaten) and eat a good breakfast. Adelle Davis did some research about 60 years ago that showed that if you eat a breakfast with fat, carbs and protein, like eggs, veggies and whole milk on oatmeal you will have a feeling of well being up into the afternoon hours. Works for me. Make veggies the main part of your diet and eat fruit when you want it and have some good quality meat every so often, maybe not every day. Go past the hamburger and go for the steaks, it is just higher quality meat. Scripture tells me that the environment is nothing at all like what it was in the first place so I concluded that not supplementing would not work very well, and research bears that out. People in simpler cultures than the over developed ones in the west eat the heads of animals they butcher, they eat the brains which are loaded with collagen, the eyes which are loaded with hyaluronic acid and the glands which can provide growth hormone. Some of those people are buff at advanced age. You can get supplements that give you all of that and you can fight off aging to a large degree, believe me I'm old and I'm lifting weights and building strength with no problem at all.
Not eating is also a good thing. I think the theory is that if you don't eat you free up energy so your pancreas can produce enzymes to repair your body instead of producing the enzymes to digest cooked food. I have no idea on when or how long to fast but it is an area that maybe nobody should overlook.
Eat veggies only cooked lightly, same for fruit. Raw or cooked at low temperatures is better because those foods come with enzymes that help you digest them without working your pancreas to make up the deficiency.
The blood is supposed to be alkyline or neutral and the digestive tract is supposed to be acidic. If you eat a bad diet this situation reverses and then beasties that are not supposed to thrive in you blood can, and ones that are supposed to thrive in your colon cannot and chronic illness ensues. Supplementing calcium is what a lot of people do to keep in balance but cancer seems to be caused by an inability to get calcium out of a cell in a lot of cases so cancer may be more of a hydration and antioxidant problem than an acid/alkiline imbalance. The hyaluronic acid supplementation will cause your body to hydrate at the cellular level and could possibly stave off cancer, it certainly causes your connective tissue to become a lot stronger.
Later
Max