There is no scientific evidence linking underwire bras to breast cancer. The myth originated from misinformation and unproven theories about lymphatic blockage.
Medical experts, including the American Cancer Society, confirm that bras do not impact breast cancer risk.
A study in Cancer Epidemiology, Biomarkers & Prevention found no connection between bra-wearing and breast cancer.
Breast cancer risk is influenced by genetics, hormonal factors, lifestyle, and environmental exposures.
Underwire bras may cause discomfort if poorly fitted but do not affect lymphatic drainage.
Wearing a properly fitted bra is important for comfort but has no impact on cancer development.