For years it has been a supposed mystery, but it is finally being acknowledged that a primary cause of cancer in the world today is diet. Studies are now showing that obesity plays an enormous role in one’s chances of getting cancer, and the main cause of obesity is the type of foods people eat. It is in large part a lifestyle disease, and the most important relevant lifestyle choice is food.
“Overall, we estimated that 40.8% of incident cancer cases were attributable to exposure to the 24 factors included in the analysis (Table 2). Tobacco smoking was responsible for the greatest cancer burden, accounting for an estimated 15.7% of all incident cancer cases (2485 cases), followed by physical inactivity and excess body weight, which were responsible for an estimated 7.2% and 4.3% of incident cancer cases, respectively. All other exposures of interest were estimated to be responsible for less than 4.0% of incident cancer cases each.” [Source]