In your 30s... Not a huge shock, but that's what a small new study published in the journal Human Reproduction concluded.
The University of California, San Francisco, study asked 107 parents who used in vitro fertilization to have their first child at age 40+ about the pros and cons of having kids at that age. Some of the pros they cited: being more self-confident and understanding; one of the big cons: lacking physical energy they had in their 20s and 30s.
The participants were also asked the "optimal age for parenting," and 80 percent of the women and 70 percent of the men said it was in the 30s. Circumstances, such as women not meeting the right partner earlier in life, were the main reason they didn't have kids earlier, many participants said.
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