A review of the effect of fasting on cancer: its prevention or treatment

Recent studies on the lifestyle of cancer patients have shown that environmental factors have a significant impact on the onset and progression of cancer. The sensitivity of cancer cells to food and energy restriction is one of the topics studied in the field of cancer prevention and treatment. One of these calorie restriction methods is fasting, which has various types. Fasting in Islam is a form of worship in which a Muslim refrains from eating, drinking, etc. from the morning call to the evening call. This is a review article by reviewing articles from various databases including PubMed, Google Scholar and Science Direct and searching for keywords: intermittent fasting, Ramadan fasting, fasting, food restriction, cardiovascular diseases, diabetes, obesity, system Immunity and Cancer deals with the effect of fasting in the prevention of cancer and its treatment, by reducing the side effects of chemotherapy and increasing its effectiveness. The results of the study show that calorie restriction can prevent the growth and development of cancer, as well as its effectiveness. to increase chemotherapy and radiation therapy, although more and more detailed studies in larger groups are needed to definitively conclude the clinical effectiveness of fasting in the prevention and treatment of people with cancer. Also, oncologists should carefully assess the health conditions of patients and prohibit them from fasting in case of metastasis or aggressive cancers.