Tag: paternal age
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Not Just Women: Men Also Face a Biological Clock
Rethinking the Biological Clock in Fertility For decades, public discourse on fertility has centered on women, often framing age as the sole determinant of reproductive success. The saying that a woman’s biological clock speeds up in her late 30s or 40s has shaped medical advice, personal decisions, and social expectations. But a growing body of…
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Biological Clock and Fertility: Men and Women Aging Together
Rethinking the Fertility Clock for Couples The long-held belief that only women carry a rapid decline in fertility with age has dominated public understanding for decades. A 2025 study challenges that narrative by highlighting a clear, biological clock for men as well. While women’s egg quality and quantity have historically drawn most attention, this new…
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Not Just Women: How Men Also Have a Biological Clock—and What It Means for Family Planning
Introduction: Rethinking the Biological Clock For decades, the phrase “biological clock” has often been used to describe women’s fertility aging. Popular narratives suggested that egg quantity and quality decline rapidly after the late 30s and early 40s, increasing miscarriage risk and raising concerns about conditions such as Down syndrome. A 2025 study challenges traditional beliefs,…
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Harmful DNA Changes in Sperm Rise with Age, Study Finds
Scientists uncover age-related rise in harmful sperm mutations Groundbreaking research published in Nature reveals that harmful genetic changes in sperm become more common as men age. The study, conducted by the Wellcome Sanger Institute in collaboration with the TwinsUK cohort at King’s College London, shows a clear, genome-wide increase in disease-causing mutations in sperm cells…
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Harmful DNA changes in sperm rise with age, study finds
New findings reveal how paternal age affects sperm DNA A landmark study published in Nature shows that harmful genetic changes in sperm become substantially more common as men age. Using ultra-accurate DNA sequencing, researchers mapped how bias in sperm production can favor mutations that may be passed on to future generations, overturning assumptions that the…