Is There Really a Chronic Disease Epidemic? It’s Complicated.

Robert F. Kennedy Jr. wants to return the nation to a time when he believes Americans were healthier. Not so fast, many researchers say.

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American Breakfast Cereals Are Becoming Less Healthy, Study Finds

They contain increasing amounts of sugar, fat and sodium and decreasing amounts of protein and fiber.

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Humpback Whales May Not See Their Most Dangerous Threats

These gentle giants have poor eyesight and may not be able to see fishnets and boats with which they have fatal encounters.

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Dick Garwin Fought Nuclear Armageddon. He Hid a 50-Year Secret.

Richard Garwin’s role in designing the hydrogen bomb was obscured from the public, even his family, as he advised presidents and devoted his life to undoing the danger he created.

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What a Prostate Cancer Diagnosis Like Biden’s Means for Patients

While prognoses for prostate cancer patients were once measured in months, experts say that advances in treatment and diagnosis now improve survival by years.

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Surgeons Perform First Human Bladder Transplant

The procedure could be life-changing for some people with debilitating conditions.

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When a Vaccine Safety Trial Becomes Unethical

New vaccines are often evaluated in trials in which some participants receive a placebo. But not all studies can be designed this way.

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As Congress Debates Cutting Medicaid, a Major Study Shows It Saves Lives

The most extensive research on Medicaid coverage to date found that it reduced the risk of death by 21 percent.

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Federal Officials May Limit Recommendations for Covid Vaccine

With new testing requirements, it’s not even clear how new Covid or flu shots can be made available this fall.

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U.S. Moves Russian Scientist’s Case to Criminal Court in Boston

For months, the Harvard researcher Kseniia Petrova has challenged efforts to deport her to her native Russia for a customs violation. This week, the government charged her with a criminal felony.

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