It has been estimated that 30–40 percent of all cancers can be prevented by lifestyle and dietary measures alone. Obesity, nutrient sparse foods such as concentrated sugars and refined flour products that contribute to impaired glucose metabolism (which leads to diabetes), low fiber intake, over consumption of red meat, and imbalance of omega 3 and omega 6 fats all contribute to excess cancer risk. Intake of flax seed and abundant portions of fruits and vegetables will lower cancer risk. Vegetables are especially beneficial, with broccoli sprouts being the densest source of sulforophane. Protective elements in a cancer prevention diet include selenium, folic acid, vitamin B-12, vitamin D, chlorophyll, and antioxidants such as the carotenoids. Ascorbic acid has limited benefits orally, but could be very beneficial intravenously. Supplementary use of oral digestive enzymes and probiotics also have merit as anticancer dietary measures. When a diet is compiled according to the guidelines here it is likely that there would be at least a 60–70 percent decrease in breast, colorectal, and prostate cancers, and even a 40–50 percent decrease in lung cancer, along with similar reductions in cancers at other sites. Such a diet would be conducive to preventing cancer and would favor recovery from cancer as well. A good focus it to eat to SERVE your body.
Now on to muscle. There is plenty of evidence that that people with high levels of muscular strength have a lower risk of cancer as well. A 40% lower risk to be exact. A study looked at almost 9,000 men aged 20-82 and found that men with a stronger one-rep max on on a given compound strength exercise had a 40% reduction in their risk of getting cancer. They adjusted for body mass index (BMI), body fat, and aerobic fitness and the results still held. There seems to be something about simply being stronger that is associated with a lower risk of getting cancer. In addition, strength actually seems to lower our risk of dying from most major diseases. For instance, men with a lower vertical leap, less sit-ups, and decreased grip strength have a higher risk of disease overall. Studies seem to suggest that strength is independently associated with a lower risk of cancer and a higher chance of avoiding an early death, regardless of age, smoking, alcohol usage, or other health issues. You train strength to keep you HEALTHY overall.
Adopt a healthy lifestyle taking advantage of the natural cancer preventatives to keep you and your body feeling the best it can be for a VERY long time!