Clinically, people often ask: Does wearing a bra increase the risk of breast cancer? Does hair dyeing increase the risk of cancer? Will a puncture biopsy cause cancer to spread? American Health magazine summarizes 15 misconceptions about breast cancer, which we hope will be helpful to you. 1. Wire bras will thicken the risk of breast cancer. This statement lacks scientific basis. There is no correlation between the type, material and elasticity of bras and breast cancer. 2. Most breast lumps may be cancerous. Wrong. In fact, about 80% of women’s breast lumps are benign cysts. 3.Breast augmentation increases the risk of breast cancer. Studies have found that women with breast implants do not have a higher risk of breast cancer than other women. However, women with breast implants may need to undergo multiple mammograms. 4. Women have a 1 in 8 chance of developing breast cancer, and the risk of breast cancer increases with age. Studies have found that the risk of breast cancer at all ages is about 1/233 in the 30s and increases to 1/8 at age 85. 5. Applying antiperspirant medication increases the risk of breast cancer. The American Cancer Society says there is no scientific basis for this claim. 6. Women with smaller breasts have a lower risk of developing breast cancer. This statement is also inaccurate. Large breasts are indeed troublesome to examine and easy to miss. 7. Breast cancer always appears in the form of a lump. Wrong. Besides lump, breast cancer may also appear as: swelling, skin irritation or indentation, breast or nipple pain, nipple constriction (invagination), redness, swelling, scaling, thickening of nipple or breast skin, appearance of abnormal discharge, enlarged lymph nodes in the armpit, etc. 8.After mastectomy, you will not get breast cancer again. After mastectomy, the recurrence rate of breast cancer will be reduced by 90%, but some patients will still have recurrence in the scar. 9. Paternal family history of breast cancer does not increase the risk of developing cancer. The truth is that paternal and maternal family history of breast cancer are equally important and should not be taken lightly. 10. Women with breast cysts are at greater risk for cancer. Fibrocystic breasts are not equivalent to breast cancer, however, the presence of cysts in the breasts should be examined in the hospital to rule out the risk of cancer. 11. Annual mammograms can increase the risk of cancer. Mammograms produce a small amount of radiation, but not enough to cause cancer. The American Cancer Society recommends that women over 40 years old should receive 1-2 mammograms per year. 12. Puncture biopsy examinations can cause cancer cells to spread to other parts of the body. Studies have not found that puncture biopsies can cause breast cancer to spread. 13.A negative mammogram is enough to rest on your laurels. Wrong. Studies have found that the leakage rate of such examinations is 10%-20%, so clinical physical examination and breast self-examination are very important. A study in 2007 found that hair straighteners and hair straightening creams do not increase the risk of breast cancer in women. 15. Infertility treatment increases the risk of breast cancer. Because of the association between estrogen and breast cancer, researchers only suspect that infertility treatment increases breast cancer risk, however, it has not been confirmed by research.