Breast cancer is more prevalent in women between the ages of 40-60, around the time of menopause. It is one of the most common malignant tumors that seriously affects women’s physical and mental health and even endangers their lives. The incidence of breast cancer in women is positively correlated with fat intake, and the risk of developing breast cancer increases with the increase of fat intake. Eating more vegetables rich in vitamin A and carotene can help women fight against general cell proliferation breast disease and reduce the risk of breast cancer. The ratio of total vegetable to animal fat intake per capita in Japan has decreased from 2.11 in the 1950s to 1.06 today, with a concomitant exponential increase in the incidence of breast cancer. Why is Shanghai the national “champion” in breast cancer incidence rate? To a large extent, it has to do with the improvement of the living standard of our residents and the change of food structure. Statistics show that the ratio of fat to total caloric energy in the diet of Shanghai residents was 9.5% in 1959, rose to 24.2% in 1982, and reached 31.2% in 1992, which exceeded the limit of 30% recommended by the World Health Organization and was close to the level of developed countries in Europe and America. In order to prevent breast cancer, you should eat more fresh vegetables and limit fat intake appropriately. 2. Vitamin D supplementation Vitamin D can prevent breast cancer and reduce the recurrence rate of breast cancer after surgery. This may be due to the fact that vitamin D can regulate the body’s defense system and enhance the body’s immune function. Vitamin D in human body mainly comes from the transformation of ergosterol in the skin after exposure to ultraviolet light from sunlight. Modern scientists point out that in order to prevent breast cancer, especially in winter when there is not enough sunlight, it is necessary to pay attention to more sunlight. Women who work in high-rise buildings without sunlight for a long time should pay more attention to sunlight exposure. If necessary, you can take some vitamin D supplements. 3. Promote breastfeeding According to a survey, 13% of women with breast cancer are caused by not giving their children normal breastfeeding after childbirth. If you can breastfeed your child for a year after delivery, the incidence of breast cancer is 50% lower than that of women who are artificially fed after delivery. Studies have concluded that excess estrogen is strongly associated with breast cancer. Breastfeeding can counteract the excessive secretion of estrogen by the ovaries and reduce the excessive proliferation of breast cells. Therefore, breastfeeding is not only beneficial to the health of children, but also a powerful measure to prevent mothers from breast cancer. 4. Avoid unnecessary X-rays Experts have found that the risk of breast cancer is nearly four times greater than that of women who have not been treated with X-rays. Canadian scholars have also found that receiving chest X-rays as a child or teenager, even for tuberculosis, significantly increases the risk of breast cancer in adulthood. The researchers advise that avoiding unnecessary X-rays or treatment during childhood is a measure that should not be overlooked to prevent breast cancer.