I had good results with hyaluronic acid for knee osteoarthritis. Sometimes they sell it as Type II Collagen. "Source Naturals Hyaluronic Joint Complex" was the best for my relatives/friends' knee problems. I take it a few times a month (with resveratrol) for smooth skin. I have been taking it since 2008 without any negative result.

You should check out Michael Levin. Cancerous cells do not grow organ-like structures. Normal cells communicate with other cells as a network to control growth.