Wildfire Fighters, Unmasked in Toxic Smoke, Are Getting Sick and Dying

The U.S. Forest Service has fought decades of efforts to better protect its crews — sending them into smoke without masks or warnings about the risks.

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Many Lung Cancers Are Now in Nonsmokers. Scientists Want to Know Why.

The face of lung cancer — once older men with a history of smoking — has changed.

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Just How Harmful Is Vaping? More Evidence Is Emerging.

A new study that found high levels of heavy metals in popular nicotine vapes adds to concerns about the products.

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Does Breathing Actually Matter for Your Workout?

Some influencers claim that breathing techniques can give your workout a boost. Here’s what works — and what doesn’t.

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An L.A. Doctor’s House Burned. Now He Treats the Fires’ Effects in Neighbors.

A new clinic, opened by a pulmonologist who lost his home in the Palisades blaze, is addressing the health issues developing among people exposed to the fires.

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Pope Francis Has Bilateral Pneumonia

The condition, which entails pneumonia in both lungs, is potentially grave, according to health experts.

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An Invisible Medical Shortage: Oxygen

Oxygen is vital to many medical procedures. But a safe, affordable supply is severely lacking around the world, according to a new report.

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