Misconception 1. Wire bras increase the risk of breast cancer. This statement lacks scientific basis. There is no correlation between the type and material of bras and their tightness and breast cancer. 2. Most breast lumps may be cancerous. Wrong. In fact, about 80% of female 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. The chance of breast cancer in women is 1/8, and the risk of breast cancer increases with age. Studies have found that the risk of breast cancer for women at all ages is about 1/233 in their 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 at this time. 6. Women with smaller breasts have a lower risk of breast cancer. This statement is also inaccurate, as large breasts are indeed troublesome and easy to be missed during examination. 7. Breast cancer always appears in the form of lumps. Besides lumps, symptoms of breast cancer include: swelling, skin irritation or indentation, breast or nipple pain, nipple constriction (indentation), redness, swelling, scaling, thickening of nipple or breast skin, appearance of abnormal discharge, and enlarged lymph nodes in the armpit. 8. You will not get breast cancer again after mastectomy. After mastectomy, the recurrence rate of breast cancer will be reduced by 90%, but some patients will still have breast cancer recurrence in the scar. 9. Paternal family history of breast cancer does not increase the risk of 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 breast cancer. Fibrocystic breasts do not equate to breast cancer. However, cysts in the breast should be examined in the hospital to rule out the risk of breast cancer. 11. Radiation from annual mammograms can increase the risk of breast cancer. Mammograms produce a small amount of radiation, but not enough to cause cancer. The American Cancer Society recommends that women should receive 1-2 mammograms per year after they are over 40. 12. Puncture biopsies can cause breast cancer cells to spread to other parts of the body. Studies have not found that puncture biopsies can lead to the spread of breast cancer. 13. A negative mammogram result is a safe bet. Studies have found that the rate of missed examinations is 10% to 20%. Therefore, clinical examination and breast self-examination are crucial. A study in 2007 found that hair straightener or hair straightening cream does 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 treatments may increase breast cancer risk, but this has not been confirmed by research.