Anxiety over global warming is leading some young Americans to say they don’t want children

Amanda Porretto isn't sure she'll ever have children.

Amanda Porretto isn’t sure she’ll ever have children.

At 27, she is the average age of new mothers in the United States, according to the Centers for Disease Control and Prevention. She’s feeling the pressure as an only child. Her father wants to be a grandfather and her mother, before she died, always told Porretto that she would eventually want to be a mom.

“Some people think it’s a bad thing” not to have a child, said Porretto, who works in advertising. “I just don’t think I need to bring more people into (the world) when there’s so much here currently that we need to fix.”

Younger generations of Americans are increasingly citing climate change as making them reticent to have children, according to several studies. They are worried about bringing children into a world with increasing and more intense extreme weather events, a result of climate change, which is caused by the release of greenhouse gases like carbon dioxide when oil, gas coal are burned. And they are concerned about the impact their offspring will have on the planet.

In a 2024 Lancet study of people 16 to 25 years old, the majority of respondents were “very” or “extremely” worried about climate change. The study also found that 52% said they were hesitant to have children because of climate change. Adults under 50 years old without children were four times more likely than adults over 50 without children to say that climate plays a factor in their decision, according to a Pew Research Center report published last year. And a study published this year in the Proceedings of the National Academy of Sciences found more than half of respondents said “yes” or “maybe” to whether climate change made them question having children.

Climate impact of children

Parenthood and climate change are related not just because of fears for a child’s well-being, but also by concern for the planet’s well-being.

Compared to the carbon emissions of all the other decisions, “having a child is by far, by orders of magnitude, larger,” said Nandita Bajaj, executive director of Population Balance, which is a nonprofit focused on humans’ environmental impact.