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Study Reveals Aging Men Face Sperm Quality Decline

10/24/2025

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Summary

Story summary

The Nature study found that sperm quality declines with age.
The study analyzed sperm samples from 81 men aged 24 to 75.
Men aged 43–58 had 3–4% of sperm with harmful mutations.
The mutations link to more than 40 genes that accumulate over time and raise the risk of developmental disorders in children.
Experts urge awareness and regular sperm testing for older men.

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Story summary

The Nature study found that sperm quality declines with age.
The study analyzed sperm samples from 81 men aged 24 to 75.
Men aged 43–58 had 3–4% of sperm with harmful mutations.
The mutations link to more than 40 genes that accumulate over time and raise the risk of developmental disorders in children.
Experts urge awareness and regular sperm testing for older men.