Like many things in life -there's a big disparity between men and women - even when it comes to reproductive ageing!
Researchers at Otago University have just been given a grant to look at whether that gap can be closed by increasing the the longevity of reproductivity in women.
The nearly 337 thousand dollars to investigate extending this has come from the prestigious Global Consortium for Reproductive Longevity and Equity.
Dr Mike Garratt's part of the team doing the work, he speaks to Jesse.