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The researchers analyzed data from 9,498 women who developed invasive breast cancer between ages 20 to 49 and 18,171 women without breast cancer who acted as controls.
Observational studies of systemic HRT after breast cancer are generally reassuring. If HRT is necessary after breast cancer, estrogen-only therapy or estrogen therapy with a progestogen may be safer options than combined systemic therapy. [71] In women who are BRCA1 or BRCA2 mutation carriers, HRT does not appear to impact breast cancer risk. [72]
A 2013 meta-analysis concluded that every use of birth control pills is associated with a modest increase in the risk of breast cancer (relative risk 1.08) and a reduced risk of colorectal cancer (relative risk 0.86) and endometrial cancer (relative risk 0.57).
Combined hormonal contraception (CHC), or combined birth control, is a form of hormonal contraception which combines both an estrogen and a progestogen in varying formulations. [ 1 ] [ 2 ] The different types available include the pill , the patch and the vaginal ring , which are all widely available, [ 3 ] and an injection , which is available ...
A lot of intimidating headlines have recently declared that taking hormonal birth control raises your risk of breast cancer. What you should know about birth control and breast cancer Skip to main ...
The researchers discovered that women who underwent a lumpectomy (where the tumor and surrounding tissue is removed but the breast is largely left intact) or a mastectomy (where one breast is ...
They concluded that: "Overall, there was no evidence of an increased risk of breast cancer". [53] Recent anxieties about the contribution of progestogens to the increased risk of breast cancer associated with HRT in postmenopausal women such as found in the WHI trials [54] have not spread to progestogen-only contraceptive use in premenopausal ...
Studies have suggested for decades that birth control pills containing both estrogen and progestogen — synthetic versions of female hormones — may slightly elevate one’s risk of breast cancer.