Men who delay starting a family have a ticking 'biological clock' -- just like women -- that may affect the health of their partners and children, according to researchers.
Men who delay starting a family have a ticking "biological clock" -- just like women -- that may affect the health of their partners and children, according to Rutgers researchers.
The study, which reviewed 40 years of research on the effect of parental age on fertility, pregnancy and the health of children, was published in the journal Maturitas.
"While it is widely accepted that physiological changes that occur in women after 35 can affect conception, pregnancy and the health of the child, most men do not realize their advanced age can have a similar impact," said study author Gloria Bachmann, director of the Women's Health Institute at Rutgers Robert Wood Johnson Medical School.
While the medical profession has no clearly accepted definition of when advanced paternal age begins -- it ranges from 35 to 45 -- infants born to fathers over 45 have risen 10 percent in the United States over the past 40 years, likely due to assisted reproductive technology.
https://www.sciencedaily.com/releases/2019/05/190513081409.htm