Can. You can eat peanuts for rectal cancer, and there is no literature to support that you cannot eat peanuts for rectal cancer. Peanuts can provide energy and nutrition to rectal cancer patients. Pay attention to appropriate intake. Rectal cancer is a consumptive disease, there can be changes in defecation habit, daily diet needs to strengthen nutrition, early to easy digestion, less residue food, such as egg custard, minced meat, etc., late with digestion and absorption obstacles, electrolyte disorders can occur, can be appropriate intake of food rich in minerals and proteins. Peanut is a common food, every 100g contains 573kcal of energy, 24.7g of protein, 47.1g of fat, 8.2g of dietary fiber, 10.1g of carbohydrate, 540mg of potassium, 160mg of magnesium, etc., which can help rectal cancer patients to maintain normal physiological function. Although peanuts are good in nutrition, they are high in fat content, which increases the burden of gastrointestinal tract and is unfavorable to the condition of rectal cancer when consumed in large quantities for a long period of time. In daily life, rectal cancer patients need to pay attention to food diversification and comprehensive nutrition.