Even men have biological fertility clocks

A new 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.

During the study, the researchers tested sperm DNA to assess its “reproductive potential” and found that starting from 35 years of age; there was a significant increase in the proportion of damaged sperm. [ more about men fertility clocks ]