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Factors influencing IUI outcome: male age

Book Contribution - Chapter

More and more men of older age now father children with their younger partners and the number of men over the age of 35 desiring to conceive children has increased over the past 40 years (Table 7.1: LOE 1b).1 According to the Office for National Statistics, the mean age of a father at birth in 1971 was 27.2 years but by 1999 this had risen to 30.1 years, and by 2004 it had risen to 32 years. In 2004 in the United Kingdom, more than 75,000 babies, that is, more than one in ten of all newborns, were born to fathers aged 40 years or over, and 6,489 children were born to fathers aged 50 years or over. In the United States in the 1970s, fewer than 15% of all men fathering children were over the age of 35. Today, this percentage has risen to almost 25%. Likewise, there has been a notable increase in the number of men fathering children in their fifties. The discrepancy in the reproductive span between males and females is astonishing and higher reproductive risks associated with advancing maternal age prompt the question whether advanced paternal age too is associated with compromised fertility and increasing risks.
Book: Intra-Uterine Insemination
Pages: 35-38
Number of pages: 4
ISBN:978-1-84184-988-1
Publication year:2013
Keywords:male age, IUI outcome