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Study Finds Link Between More Lifetime Sexual Partners and Higher Cancer Risk in Older Adults

Study Finds Link Between More Lifetime Sexual Partners and Higher Cancer Risk in Older Adults

People vary in their number of lifetime sexual partners—some embrace variety, others prefer monogamy. A compelling new study prompts a closer look at potential long-term health implications.

Published in BMJ Sexual & Reproductive Health, this research examined data from 2,537 men and 3,185 women aged 50 and older (average age 64), with three-quarters married. Participants reported their lifetime sexual partners, categorized as 0-1, 2-4, 5-9, or 10+.

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Sexual Partners and Cancer Risk

The findings reveal a clear pattern: more lifetime sexual partners correlated with higher cancer rates. Women with 10 or more partners were 91% more likely to have developed cancer than those with 0-1 partners. For men, the increased risk was 69%.

Role of Infections

Lead researcher Dr. Lee Smith explains: "We anticipated this association, as prior studies link sexually transmitted infections (STIs) to certain cancers. More partners increase STI transmission risk, which aligns with our results."

Gender Differences

The stronger link in women may stem from infections like HPV (human papillomavirus), strongly tied to cervical cancer, Smith notes.

Benefits of Sex

Smith stresses that sex offers significant benefits, including stress reduction, lower cardiovascular risk, boosted self-confidence, and enhanced well-being. He urges against panic—this study identifies correlation, not causation.

Other Risk Factors

The analysis controlled for factors like smoking and alcohol use, suggesting unhealthy habits may compound risks. Source: Health.com