Breast cancer patients are advised to eat a healthy diet with low intake of high-sugar and high-fat foods and no animal-derived estrogen. 1. Eat less high-sugar and high-fat food: breast cancer patients can eat some high-sugar food, but not too much. For example, bread, cookies, sugar, light cream, burgers, fried chicken, barbecue and other foods. Because the above foods contain more fat and sugar, they will affect the body after eating, and there may be the phenomenon of elevated blood sugar. 2. Animal-origin estrogen: After the appearance of breast cancer, patients are not allowed to consume animal-origin estrogen, because breast cancer has a great relationship with estrogen. Therefore, it is suggested that breast cancer patients should not consume estrogen of animal origin, such as royal jelly. Breast cancer patients should go to regular hospitals in time and follow the doctor’s instructions to receive treatment. Contraindicated foods can be consulted with clinicians in detail.