I went vegan and have been ever since -- 26 years now! But the regression of the breast cancer of my bones and lung was not the only benefit. My osteoarthritis disappeared and I was taken off the Naproxen that a rheumatologist had put me on 5 years prior. There were a number of other ailments that also disappeared within weeks.
On top of all that, because I had been so fit, I continued my daily runs and added biking and swimming, and in 1984, became the first cancer patient to do the grueling Ironman Triathlon! I have since the done Ironman 6 times, won more than 900 first place trophies in marathons, triathlons, the pentathlon, and 6 gold medals in the Senior Olympics. At the age of 64, I was named "One of the Ten Fittest Women in North America" when the other nine were in their 20s and 30s.