Wearing Bras Causes Breast Cancer?

An Internet search on bras and their relation with breast cancer reveals a very strange result. Despite enough specialistic studies and hard validation that establishes the causality between wearing bras and breast cancer, the two seem tightly linked with most sources pointing to a book named Dressed to Kill by Singer and Grismaijer.

Bras cannot cause breast cancer themselves, but wearing sizes that are too tight may help cancer growth and the reason for that is tight fitting bras can prevent women's bodies from excreting toxic and dangerous carcinogenic chemicals. Statistics show that as high as 80% of women wear the wrong-sized bra.

The tight bras restrict lymph flow in the breasts. There are several nodes and pathways in the arm pits and in between the breasts. The task of the lymph nodes is to flush out waste materials and toxic material away from the breasts. In theory, tight fitting bras restrict this same flow thereby causing toxins to accumulate in the breast area and may help cancer to develop. Toxic materials include DDT, dioxin, and benzene all of which cling to fatty human tissue such as the breast.

The book does present some startling statistics:

75% of women who wore bras everyday for 24 hours developed breast cancer
14% of women wearing bras more than 12 hours per day (not in bed) developed breast cancer
0.6% of women who wore bras for less than 12 hours a day developed breast cancer

It is very important to note here that the numbers may explain a relationship between wearing bras for a long period of time and breast cancer but they do not necessarily prove a causal relationship between the two. More research needs to be done on lymphatic system and breast cancer to illuminate this issue.

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