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June 6, 2026The Journal of Sexual Medicine

(433) Three Decades of Change in Sexual Activity and Function Among Japanese Men: A Comparative National Survey

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Authors

YSY SatoATA TsujimuraMSM Shirai

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Overview

Comparative national survey examines declines in sexual activity and function in Japanese men over three decades, indicating concerning trends.

Key Points

  • This study aimed to analyze changes in sexual activity and function among Japanese men over 30 years.
  • Conducted a nationwide survey in 2023 with 3,795 men aged 20-79 years, analyzing sexual frequency, penile rigidity, and morning erections.
  • Compared data with the 1991 Sapporo Survey targeting marital cohorts to standardize definitions and ensure consistency.
  • Used comparative analyses of married participants from both surveys.
  • In 2023, a higher proportion of men reported sexual activity less than once per month compared to 1991, except for men in their 20s.
  • Significantly more men reported insufficient penile rigidity for penetration in 2023 than in 1991 across most age groups.
  • The prevalence of complete absence of morning erections increased significantly in 2023 across all age groups.

Cite This Study

Sato et al. (2026) studied this question.

synapsesocial.com/papers/6a23bc5171a5da9775e77b48https://doi.org/10.1093/jsxmed/qdag118.383
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