The bra is designed to alter breast shape, and it does this by applying constant pressure to the breast tissue. This pressure pinches the thin lymphatic vessels within the breast, impairing the lymphatic circulation.

This causes fluid and toxins to accumulate in the breasts, which results in breast pain and cysts. It also prevents the proper cleansing of the breast tissue, resulting in toxin accumulation.


Over time, this can cause cancer.

Keep in mind that the lymphatic system is the circulatory pathway of the immune system. Without proper lymphatic drainage, the breasts cannot be effectively cleansed of waste products, cancer cells, viruses, bacteria, cell debris, and other products that are normally flushed away.

The tissue gets deprived of oxygen and nutrients as well. And any toxins we consume in our polluted air, water and food, as well as toxic medications, cannot effectively be flushed away from the breast tissue.

Some of these toxins are also carcinogenic.  The bra concentrates these toxins in the breast.

More ISCD information

On The Link Between Breast Cancer

And Bras

SOME STUDIES THAT SUPPORT THE BRA/CANCER LINK:

  • 1991 Harvard study (CC Hsieh, D Trichopoulos (1991). Breast size, handedness and breast cancer risk. European Journal of Cancer and Clinical Oncology 27(2):131-135.). This study found that, “Premenopausal women who do not wear bras had half the risk of breast cancer compared with bra users…”
  • 1991-93 U.S. Bra and Breast Cancer Study by Singer and Grismaijer, published in Dressed To Kill: The Link Between Breast Cancer and Bras (Second Edition, Square One Publishers, 2018). Found that bra-free women have about the same incidence of breast cancer as men. 24/7 bra wearing increases incidence over 100 times that of a bra-free woman.
  • Singer and Grismaijer did a follow-up study in Fiji, published in Get It Off! (ISCD Press, 2000). Found 24 case histories of breast cancer in a culture where half the women are bra-free. The women getting breast cancer were all wearing bras. Given women with the same genetics and diet and living in the same village, the ones getting breast disease were the ones wearing bras for work.
  • A 2009 Chinese study (Zhang AQ, Xia JH, Wang Q, Li WP, Xu J, Chen ZY, Yang JM (2009). [Risk factors of breast cancer in women in Guangdong and the countermeasures]. In Chinese. Nan Fang Yi Ke Da Xue Xue Bao. 2009 Jul;29(7):1451-3.) found that NOT sleeping in a bra was protective against breast cancer, lowering the risk 60%.
  •  2011 a study was published, in Spanish, confirming that bras are causing breast disease and cancer.  It found that underwired and push-up bras are the most harmful, but any bra that leaves red marks or indentations may cause disease.
  • 2014 Lymphedema and subclinical lymphostasis (microlymphedema) facilitate cutaneous infection, inflammatory dermatoses, and neoplasia: A locus minoris resistentiae. Clin Dermatol. 2014 Sep-Oct;32(5):599-615.
  • 2015  Comparative study of breast cancer risk factors at Kenyatta National Hospital and the Nairobi Hospital     J. Afr. Cancer (2015) 7:41-46.  This study found a significant bra-cancer link in pre-and post-menopausal women.
  • 2016  Wearing a Tight Bra for Many Hours a Day is Associated with Increased Risk of Breast Cancer     Adv Oncol Res Treat 1: 105. This is the first epidemiological study to look at bra tightness and time worn, and found a significant bra-cancer link.
  • 2016 Brassiere wearing and breast cancer risk: A systematic review and meta-analysis  World J Meta-Anal. Aug 26, 2015; 3(4): 193-205 "This systematic review and meta-analysis aimed to evaluate the association between 8 areas of brassiere-wearing practices and the risk of breast cancer. Twelve case-control studies met inclusion criteria for review. Although the meta-analysis shows statistically significant findings to support the association between brassiere wearing during sleep and breast cancer risk, evidence was insufficient to establish a positive association between brassiere wearing (duration and type) and breast cancer risk. A large-scale epidemiological study is needed to examine the relationship between various forms of brassiere exposure and breast cancer risk."
  • 2016 Lymphatic Vessels, Inflammation, and Immunity in Skin Cancer Cancer Discov. 2016 Jan; 6(1): 22–35. 
  • 2017 Surgical damage to the lymphatic system promotes tumor growth via impaired adaptive immune response Journal of Dermatological Science April 2018Volume 90, Issue 1, Pages 46–51 "These results strongly indicate that surgical damage of the lymphatic system may promote tumor progression via impaired adaptive immune response."
  • 2018 Mechanical forces in skin disorders  Journal of Dermatological Science Available March 2018 "Mechanical forces are known to regulate homeostasis of the skin and play a role in the pathogenesis of skin diseases….Acral melanoma predominantly occurs in the weight-bearing area of the foot suggesting the role of mechanical stress. Increased dermal stiffness from fibrosis might be the cause of recessive dystrophic epidermolysis bullosa associated squamous cell carcinoma."
  • 2018 Lymph stasis promotes tumor growth Journal of Dermatological Science "(t)hese findings come as no surprise to us who for a long time have been aware that alterations in regional lymphatic flow may produce dysregulation in skin immune function and consequent oncogenesis. In fact, since 2002, our team has held the view that lymphedematous areas are immunologically vulnerable sites for the development of neoplasms as well as infections and immune-mediated diseases. In recent years, increasing evidence has confirmed this assumption."
  • 2018 How Bras Cause Lymph Stasis and Breast Cancer Academic.edu  "Recent studies are showing that lymph stasis causes cancer by reducing immune function. This article draws on these studies to further explain how constriction from tight bras results in lymphatic impairment in the breasts and an increased incidence of breast cancer."