A brand new study has found that women who delay motherhood tend to be healthier in their 40s.
Meanwhile, it found that women who had their first child between the ages of 15 and 24 were unhealthier in midlife.
The study used information from the 3,348 women who participated in the National Longitudinal Survey of Youth 1979 in the US.
It was conducted by Ohio State's Center for Human Resource Research for the U.S. Bureau of Labor Statistics.
Study co-author Dr Kristi Williams said the findings were the first of its kind.