How bras are linked to breast cancer ?
Many people say that bras causing breast cancer is just a myth. It is true that bras do not cause breast per se, but ill-fitting, too tight bras can help cancer growth since they can prevent your body from excreting dangerous cancer-causing chemicals. And, as bra industry and even Oprah have noted, 80%+ of women wear the wrong-size bra.
The main reason why tight bras are bad for breast health is because they restrict the lymph flow in your breasts. There are numerous lymph pathways and lymph nodes in the armpits, under the breasts, and in between the breasts. Normally the lymph fluid washes out waste materials and other toxins away from the breasts, but bras (and especially push-up bras) inhibit this action, so toxins can start to accumulate in the breast, and that can help cancer to develop. In other words, bras inhibit the way our bodies normally cleanse themselves and get rid of cancer cells and toxins like PCBs, DDT, dioxin, benzene and other carsinogenic chemicals that cling to the body’s fatty tissues like breast. In fact, if you find a lump in your breast, it may very well be filled with lymph fluid that was not able to move away from the breast tissue.
Bra wearing may also be connected to cancer in other ways. Wearing bras slightly increases the temperature of the breast tissue, and women who wear bras have higher levels of the hormone prolactin. Both of these may influence breast cancer formation.