1. Sufficient sleep. Menopausal women who sleep less than 6 hours a night have twice the risk of breast cancer as women who get enough sleep. 7-8 hours of sleep a night can maintain normal body rhythm and help reduce the risk of cancer. 2. Good mood. Anxiety, depression and emotional instability can give breast cancer a chance to take advantage of. It is important to keep your mood cheerful, and your body will be healthier if you are in a good mood. 3. Enjoy sex. The long term sexual repression will disrupt the balance of thalamus-pituitary-ovary function, leading to disruption of female hormone levels and inducing breast cancer. Sex is human nature, enjoy sex is the right, is beautiful. 4. Reduce weight. The thinner a woman is, the less risk she has of getting breast cancer. Obesity can lead to increased risk of recurrence and death from breast cancer. Fatty tissues can increase the level of estrogen in women’s bodies, which in turn increases the risk of breast cancer. Fat also raises the level of insulin that stimulates tumor growth. Usually, you should eat more vegetables and less meat, eat reasonably and pay attention to weight control. 5. Eat more vegetables. Women who eat more vegetables such as cauliflower, cabbage and broccoli have a lower incidence and recurrence rate of breast cancer. The vitamin C, carotenoids and polyphenols in these vegetables can play a key anti-cancer role; the intake of dietary fiber will reduce the risk of breast cancer, for adult women, they should ensure the daily intake of 25 grams of dietary fiber; kelp is not only rich in vitamin E and dietary fiber, but also contains trace elements of iodine. Iodine deficiency is one of the causative factors of breast cancer, thus regular consumption of kelp can help prevent breast cancer. The low incidence of breast cancer in Japanese women may be related to the frequent intake of seaweed foods such as kelp. 6. Eat fruits. Women eat mangoes to prevent breast cancer; red apples and other “red skin” fruits and vegetables have a preventive effect on breast cancer; kiwifruit contains substances that can block the generation of nitrosamines in the body, which has a good cancer prevention effect. 7. Drink milk. Women who drink more than 3 cups of milk a day can reduce their chances of breast cancer by half. The anti-cancer factors in milk include calcium, vitamin D and conjugated linoleic acid, etc. 8. Soy products. Natural soybeans and soy products made from them contain isoflavones, which are a very important phytoestrogen that inhibits the activity of caseinate kinase in the body, thus effectively inhibiting the growth of cancer cells. 9. Drink less alcohol. Two glasses of alcohol per day can lead to an increased risk of breast cancer, and frequent drinking can also lead to an increased recurrence rate. Alcohol consumption can increase estrogen levels in menopausal women, increasing the risk of breast cancer. 10. Be active. Strengthen physical exercise to enhance the immunity of the body. Activities such as walking, cycling, planting flowers, vegetables and doing housework will reduce the risk of breast cancer. Take high calcium and vitamin D to help reduce the risk of breast cancer in premenopausal women, and the prognosis of early breast cancer patients who lack vitamin D is poor. The best time to get vitamin D is from 8:00-10:00 am or 4:00-7:00 pm, which not only has a good absorption effect but also does not burn the skin. 12. Avoid X-rays. The risk of breast cancer is greater in women who have received X-rays than in those who have not received X-rays. Even if you receive chest x-ray as a child or teenager because of tuberculosis, the risk of breast cancer in adulthood increases significantly. Unnecessary X-rays or treatment should be avoided during childhood. 13. Limit hormones. When treating menstrual disorders or menopausal syndrome with hormones, generally do not exceed three months. Use contraceptive pills sparingly. 14.To marry and raise children. Marriage and childbirth too late can make women’s body hormone level imbalance and increase the chance of breast cancer. When married, marry, the birth, advocate childbirth before the age of 30, adhere to breastfeeding there. 15, heavy maintenance. To strengthen breast maintenance, wearing a bra should be appropriate, too small bra will compress the breast tissue, which is not conducive to breast blood circulation and lymph circulation, which may induce breast cancer. Professional breast health massage can also be carried out. 16.Pick up the examination frequently. If you experience breast discomfort, enlargement of one breast, nipple elevation, itching and rash of nipple and areola, plasma or bloody nipple overflow, breast lump, pain or tingling, soreness in one armpit, back of shoulder or upper arm after menopause for many years, especially if you experience intermittent severe pain unrelated to menstrual cycle with obvious tenderness in the breast, you must go to hospital for comprehensive examination. In particular, if you have intermittent severe pain in the breast area unrelated to the menstrual cycle with obvious tenderness, you must go to the hospital for a comprehensive examination and discharge.