This is an edition of the WSJ Health newsletter, a weekly briefing on what’s new in health, medicine, personal well-being and the business of healthcare. If you’re not subscribed, sign up here.

Editor’s Note: After this final edition of 2025, the WSJ Health newsletter will take a short hiatus. Have a happy new year!

Cutting saturated fats has benefits, according to new research in the Annals of Internal Medicine. The data come even as Health Secretary Robert F. Kennedy Jr. has sought to promote the fats, a departure from longstanding guidance.

Heart attacks and lung conditions jumped after the Los Angeles wildfires, according to an analysis by researchers of emergency-department data at Cedars-Sinai. The study also found a perplexing rise in unexplained illnesses.

The amount that the Dana-Farber Cancer Institute will pay to settle fraud allegations regarding altered data in grant-funded research.

Daniel Akst considered himself far too young and fit for a cane. But after the 69-year-old writer threw out his back, he discovered something surprising about the stereotypical symbol of senescence: It was actually a huge help.

New high-tech clothes and shoes promise to boost wellness. A few companies are betting the next frontier is garments that offer potential health benefits including lymphatic drainage, increased focus and healthier skin.

Chinese billionaires are having dozens of U.S.-born babies via surrogate. The country’s elites are going outside of China, where domestic surrogacy is illegal, to take advantage of the largely unregulated U.S. surrogacy industry, a WSJ investigation reveals.

The Justice Department indicted the Adderall startup Done Global after its CEO’s conviction. The company, which prosecutors have called a “pill mill,” is still operating and has served tens of thousands of Americans.

The Health newsletter gives you a weekly briefing on what’s new in health, medicine, personal well-being and the business of healthcare.