Perimenopause and cancer risk: Why this transition phase matters more than you think

Perimenopause is the normal transition period before menopause, typically beginning in a woman's early to mid-40s, when the ovaries slowly make less estrogen. This phase may last a few years and is characterized by irregular cycles, hot flashes, mood swings, sleep problems, and metabolic changes. It is often thought of as a simple hormonal change, but is a crucial time for early screenings and preventative medical treatment because it also occurs when women are more susceptible to osteoporosis, cardiovascular disease, and many types of cancer.
Here are six ways perimenopause quietly increases cancer risk and how awareness and prompt action can be lifesaving.

Heavy, prolonged, or irregular bleeding during perimenopause is normalized. But it can be a signal of endometrial abnormalities, such as precancerous changes or uterine cancer. Any bleeding outside of normal patterns should always be checked out instead of dismissed.

Estrogen and progesterone levels both increase and decrease unpredictably during perimenopause. These unpredictable changes can trigger abnormal growth of breast cells. Studies show that cumulative lifetime exposure to estrogen is the main reason for breast cancer and therefore this time is crucial for mammography and self-examination.

Almost 1 out of 10 women undergo menopause earlier than 45 years, usually because of lifestyle, reproductive history, autoimmune diseases, or medical conditions such as chemotherapy. Premature menopause has been shown to increase the risk of lung and liver malignancies and to double the risk of breast cancer.

Smoking, eating poorly, and not exercising accelerate ovarian aging, increasing the risk of metabolic and cancerous diseases as well as an early menopause in women. Inactivity in particular promotes insulin resistance and obesity, which creates a metabolic environment linked to a number of malignancies.

Premature ovarian failure and cancer risk are increased by exposure to environmental pollutants and endocrine disruptors, which are more prevalent in urban areas. Premature menopause can also result after cancer therapies like oophorectomy or pelvic radiation, which might change long-term health and increase the risk of subsequent cancer.

Neglect is the most subtle yet deadly. Numerous women do not receive Pap smears, HPV testing, pelvic ultrasounds, or mammograms during perimenopause. Such a lack of preventive monitoring frequently postpones diagnosis until cancers become more advanced, when treatment prognosis is poorer.
Perimenopause is not a phase to be suffered passively. Knowledge, early consultation, and preventative health screenings in the 40s can enable women not only to glide into menopause effortlessly but also to have healthier decades to follow.
Dr. Renu Sharma, Consultant – Gynec Oncosurgeon, HCG Cancer Hospital, Indore