Several researchers have suggested that fasting may help in the prevention and treatment of cancer. It helps in fighting cancer by lowering insulin resistance and levels of inflammation. Fasting may also reverse the effects of chronic conditions such as obesity and type 2 diabetes, which are the major risk factors of cancer.
Researchers believe that fasting may increase the response of cancer cells to chemotherapy while protecting other cells. It may also boost the immune system to help fight the existing cancerous cells. Source: Medical News Today