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According to world statistics, nutrition is estimated to contribute to about one-third of preventable cancers, nearly the same amount as the contribution of smoking. It is defined as the processes by which living organisms' intake of food and drink is used by the body for fuel, growth, reproduction, and the overall maintenance of health. Thus, sufficient nutritional consumption is essential for well-being. Consequently, it is an important part of life, cancer treatment, recovery, and prevention; eating the necessary nutrients prior to, during, and after a cancer treatment would aid the patient in the recovery process. A healthy diet means a stable nourishment, and includes obtaining sufficient amounts of essential nutrients (vitamins, minerals, protein, carbohydrates, fat, and water) the body needs. Inadequate intake of essential vitamins and minerals might explain the epidemiological findings that people who eat only small amounts of fruits and vegetables have an increased risk of developing cancer.