Radiolab Radiolab

Fertility Cliff

Dec 26, 2025

Summary

In this year-end episode, hosts Molly Webster and Latif Nasser reflect on 2025’s top stories and urge listeners to support public media amid funding cuts. The main segment revisits a 2018 live event where Webster debunks the myth of a sharp "fertility cliff" at age 35. Using updated data from epidemiologist Lauren Wise, she explains that fertility declines gradually rather than abruptly, offering a more nuanced view of reproductive health.

Topics discussed

Sponsors and Radiolab intro Year-end favorites and funding crisis Donation appeal and gift options The myth of the fertility cliff Debunking old data with Danish studies Sponsors: Progressive and Planet Money North American fertility data and trends Updated stats and male fertility decline Final donation ask and holiday wishes Staff credits and sponsors
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