Avoid adding butter, margarine, oils, or other fats to your food, except small quantities of olive oil or cold-pressed sesame oil. Eliminate trans-fatty acids and hydrogenated oils, such as are found in margarine. Many vegetable oils like corn oil, and saturated animal fats can worsen prostate cancer. Omega-3 oils found in some fish and flax seed can be beneficial. Reduce the amount of sugar.
Sugar is one of the preferred fuels of cancer cells.
Reduce the amount of refined white wheat and other refined carbohydrates. These are quickly converted to sugar in the body, and wheat may also be a source of food allergies. Avoid dairy products. Dairy fat is very bad for prostate cancer. Fat free dairy products may be fine for some, but can be harmful to those with dairy allergies, and possibly may increase IGF-1 levels, which is bad for prostate cancer.