The World Health Organization says about 70% of cancers can be avoided.
Why does cancer grow in some and not others? No one really knows but studies prove some very basic things. All diseases are grown in an acidic , congested environment. It is therefore important to destress, sleep, cut out junk foods, processed foods, sugars, and drink alkaline water to balance the bodies PH. When we eat acidic foods our Ph becomes out of balance , add stress which also acidifies the body and can contribute to shallow breathing and low oxygen in the body. Hormones also play a large factor.
Many factors can accumulate . Therefore it is important to make as many small healthy changes everyday as you can. There are so many positive things you can do such as eating organic, avoid GMO's, sleep, detoxing the body regularly, and lymphatic massages to name a few.