Diet by itself has not been proven to cure cancer, states WebMD, but a healthy diet can significantly decrease the chances of developing cancer, according to the National Institutes of Health. Healthy eating can also extend and increase the quality of life after cancer treatment, notes Mayo Clinic.
No specific diet has proven to cure cancer or to slow down its progress, notes WebMD. As of 2015, the chances of being cured of cancer depend highly on the type of cancer and how soon it is diagnosed. Treatments for cancer include surgery, radiation therapy, chemotherapy, hormone therapy and immunotherapy. Limiting salty foods, red and processed meats, and excess alcohol increase the chance of cancer prevention. This is in addition to maintaining a healthy weight, an active lifestyle, and not using tobacco products, states the National Institutes of Health.