Re: ] Breast Cancer and Low Thyroid

[Guest guest]

This would make pretty good sense and here's why: We're not supposed to take estrogen and thyroid together because they both compete for chemical reactions at the same sites. Seems that if you had a lot of estrogen in your body, thyroid hormone uptake wouldn't be as much (and vice-versa).

marin@...

] Breast Cancer and Low Thyroid

Thought this was interesting!

Hugs, Feisty

Webb Osterlohgroup co-owner http://groups.yahoo.com/group/The_Thyroid_Support_Group/ATP Board Member,Thyroid Patient Advocate

Underactive Thyroid May Reduce Breast Cancer Risk Mon Apr 7,11:10 AM ET By RauscherTORONTO (Reuters Health) - Having an underactive thyroid gland may reducea woman's risk of developing breast cancer (news - web sites), according toa new study. Breast cancer may also grow more slowly in women with ahistory of the thyroid condition, known as hypothyroidism, researchersreport.The impact of thyroid problems on breast cancer has been debated bydoctors for decades and still remains controversial, Dr. MassimoCristofanilli of the University of Texas-M.D. Cancer Center inHouston told Reuters Health.Cristofanilli's team compared around 1,100 women with newly diagnosedbreast cancer with nearly 1,100 healthy women. Seventy-eight percent ofthe women were white, 11 percent were Hispanic and 11 percent wereAfrican-American.Hypothyroidism occurred significantly more often in healthy women than inwomen with breast cancer. This was true for all ethnic groups. The study found that women with breast cancer were 57% less likely tohave an underactive thyroid than healthy women.In addition, women with breast cancer and hypothyroidism were less likelyto have breast cancer that had spread to the lymph nodes and they were morelikely to have breast cancer dependent on the female hormone estrogen.About two-thirds of breast tumors have estrogen receptors and will grow inresponse to the female hormone."These findings actually suggest a possible link between dysfunction ofthe thyroid hormone and an estrogen-dependent tumor like breast cancer,"Cristofanilli told Reuters Health. These "intriguing" findings should bestudied further, he added.The cancer researcher was scheduled to present the findings Monday duringthe American Association for Cancer Research's 94th Annual Meeting inToronto, but meeting planners canceled the event citing growing concernabout cases of severe acute respiratory syndrome (SARS) in the city.