Breast cancer patients mainly eat light foods, mainly low protein foods and vitamin-rich foods, such as sugar, rice, steamed buns, etc., or fresh vegetables and fruits, which contain more vitamins and fibrous protein. Avoid eating soy-based foods because soy contains phytoestrogens that may lead to tumor metastasis or recurrence. Avoid eating meat and high-protein foods, such as lean meat, fatty meat, eggs and cheese, etc. Also, avoid eating barbecue foods or fried foods.