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7 July 2026

Breast and ovarian cancer: the BRCA gene link explained

Age, hormones, and reproductive history: the non-genetic risk factors

Genetics are not the only driver. The source identifies several additional factors that can raise a woman’s risk for both breast and ovarian cancer, independently of BRCA status.

Doctor consulting female patient about cancer risk factors and hormone therapy options
Illustration © Toptenplay

Age is among the most consistent: risk rises notably after 50. Long-term postmenopausal hormone replacement therapy (HRT) has also been associated with increased risk, making it a factor worth weighing carefully with a doctor before starting or continuing treatment.

Reproductive history adds another layer of complexity. Early onset of menstruation, late menopause, or never having children can elevate risk — particularly for ovarian cancer, according to the source. These factors interact with hormonal exposure over a woman’s lifetime, which is why a thorough personal and family medical history remains essential during any preventive health consultation.

From mammograms to preventive surgery: the concrete options available

For women identified as high-risk, the source outlines a range of concrete preventive strategies. Enhanced cancer screening is typically the first line: this can include earlier and more frequent mammograms, breast MRIs, pelvic ultrasounds, and CA-125 blood tests — a marker used to monitor for ovarian cancer.

Ultrasound machine used for ovarian cancer screening and preventive health monitoring
Illustration © Toptenplay

Some women opt for more definitive interventions. Preventive mastectomy (surgical removal of breast tissue) or oophorectomy (removal of the ovaries) can drastically reduce the risk of developing either cancer, according to the source. These are significant decisions that require thorough discussion with a specialist, as they carry their own medical and personal consequences.

For those not ready for surgery, risk-reducing medications offer another path. The source specifically mentions tamoxifen, a drug that may lower breast cancer risk in eligible women. It is worth noting that ovarian cancer symptoms — including bloating and pelvic pain — are often vague and easy to dismiss, which makes proactive monitoring all the more important for women at elevated risk.

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