The Day

As U.S. fertility rates collapse, finger-pointing, blame follow

- By ARIANA EUNJUNG CHA

As 2017 drew to a close, House Speaker Paul Ryan, R-Wis., urged Americans to have more children. To keep the country great, he said, we’re “going to need more people.”

“I did my part,” the father of three declared.

Ryan’s remarks drew eye rolls at the time, but as new data about the country’s collapsing fertility rates has emerged, concern has deepened over what’s causing the changes, whether it constitute­s a crisis that will fundamenta­lly change the demographi­c trajectory of the country — and what we should do about it.

Women are now having fewer babies and at older ages than in the past three decades, a change that the Centers for Disease Control and Prevention’s National Center for Health Statistics reported this year, and which was confirmed this week with the release of additional data that shows that the trend holds across races and for both urban and rural areas.

The CDC said Wednesday that the total fertility rate — a theoretica­l figure that estimates the number of births a woman will have in her lifetime — fell by 18 percent from 2007 to 2017 in large metropolit­an areas, 16 percent in smaller metro areas and 12 percent in rural areas. A similar downward trend holds for white, black and Hispanic women.

Fertility and birthrates are among the most closely monitored indicators of a country’s economic health. When too high, a surging youth population might be unable to find work and become susceptibl­e to unrest. When too low, economies can rapidly contract, and a small working-age population has to support a large retired population. While the United States is somewhat more buffered due to its high levels of immigratio­n, the decline in fertility rates has been going on so long that if things continue, demographe­rs say, the country may face an extreme population imbalance in the future.

Theories — social, economic, scientific, environmen­tal — about why fertility is falling so sharply in the United States abound. Many agree that cultural shifts, such as women getting married later and focusing on education or work, play a big role. But there’s considerab­le debate, some of it more political than evidence-based, about other possible causes.

Economist Lyman Stone has blamed the United States’ less-than-generous parental leave and pay policies. Human Life Internatio­nal, a missionary group, blames “pro-abortion population control groups like Planned Parenthood.” Fox News host Tucker Carlson claims it has to do with immigratio­n, arguing that immigrants drive wages down, which hurts the attractive­ness of men as potential spouses — “thus reducing fertility.”

Some have even wondered whether the decline might be influenced by sperm quality. Recent medical journal publicatio­ns have indicated that exposure to pollutants might be harming reproducti­ve health, including the motility and quantity of sperm, which could delay childbeari­ng and overall fertility.

The University of Pennsylvan­ia’s Hans-Peter Kohler, who studies fertility and birthrates, said the answers may be elusive for some time. He said the data indicated that many of the shifts affecting fertility are occurring “in the transition to adulthood.” The biggest recent drops in birthrate have been among teenagers as well as people in their 20s. In 2016, the teen birthrate hit at an all-time low after peaking in 1991.

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