Washington, Oct 27: If you thought only women witness a fall in their fertility levels after reaching late thirties or early forties, you certainly need a rethink, for a new study suggests that a similar biological clock is also found in men.
The study found that male fertility begins to decline when they reach their mid-30s, suggesting that biological clocks are found in men as well as women.
According to the scientists, men who wait until their 40s before starting a family, have a greater chance of their partner having a miscarriage, owing to the poorer quality of their sperm.
A Sydney IVF clinic carried out the research on 3,324 men over a four-year period.