Preventing breast cancer from appearing can usually be prevented by adjusting diet, mood, exercise and other methods. 1. Diet: usually we should develop good dietary habits, avoid eating too much meat, sweets, etc., eat less pickled, smoked, fried and baked food, eat more fresh vegetables and fruits, quit smoking and drinking. 2. Mood: At the same time, we should make sure that our mood is in a good state, avoid losing temper, short temper and emotional tension may induce breast cancer, so we suggest to make sure the mood is happy and relax. 3. Exercise: and regular physical exercise, more participation in social activities, you can run, bike, swim, etc. to prevent breast cancer, such exercise can improve the pleasant mood, and at the same time can enhance physical fitness, thus reducing the risk of breast cancer. Pay attention to the health of your breasts and make it a habit to go to the hospital for regular checkups. Seek medical attention if you feel unwell.