Without knowing the type of cancer or any details i suggest searching for a Cancer Treatment Centers of America clinic. they are located in most major cities and incorporate nutrition, naturopathic medicine, and other natural treatment modalities into their treatment plans.  they are located in Seattle, Tulsa, Philadelphia, Chicago and other cities.  If you are close to Kansas City the hospital there has an Integrated clinic and they use and integrated approach.

Nutritional problems are always a contributing factor in any disease the rise in consumption of acid forming foods such as sugar, saturated fats, white flour, ready made meals, fast foods, colourings preservatives are all contributing factors to ill health.

Nutrition is the key to healing any disease it is safe with no side effects.

 Add plenty of raw fruit and vegetables to your diet

Garlic, red onions, tomatoes , broccoli sprouts, carrots, peas, squash, sweet potatoes, chicken, fish, avocado, blue berries, pineapple, apples, watermelon, cherries, apples, olive oil, sea salt, filtered water, green tea, Edible seeds: flax, sunflower, sesame and vitamin C tablets ...........

It is important that your daily dietary intake of food naturally acts to balance your body ph balance 

Disease cannot live in an alkaline environment.