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  • 10 - Male reproductive ageing

  • from SECTION 2 - BASIC SCIENCE OF REPRODUCTIVE AGEING
  • Edited by Susan Bewley, William Ledger, University of New South Wales, Sydney, Dimitrios Nikolaou
  • Book:
    Reproductive Ageing
    Published online:
    05 February 2014
    Print publication:
    01 June 2009, pp 95-104

  • Summary

    Age-related changes in sperm output develop gradually without any evidence of sudden onset. Female fecundity starts to decline after 30 years of age and is greatly reduced after age 40 years. The effect of male age on fecundity remains controversial and few studies show a similar trend in men. The effect of ageing of the male partner on the risk for miscarriage has been studied extensively, although many studies are retrospective, span long observational periods and fail to control properly for maternal age effects, or have small sample sizes. The Royal College of Obstetricians and Gynaecologists (RCOG) recommends the British Andrology Society guideline of limiting the age of sperm donors to 40 years. Paternal ageing does not affect the risk of miscarriage, and increased paternal age on its own is not an indication for prenatal diagnosis since the absolute risk for genetic anomalies in offspring is low.