The primary reason for the decline in male fertility with age is the reduction in testosterone levels, which leads to lower sperm production and decreased sperm quality.

Authors

• Person: Not available Organization: London Andrology
  How Men's Hormones Change with Age - London Andrology

Sources

• How Men's Hormones Change with Age - London Andrology londonandrology.com London Andrology via serper

Referenced by nodes (1)

• testosterone concept