Two regulatory rollbacks, along with a new A.I. experiment in Medicare, raise some worrisome questions.

The review looked at more than three dozen studies and found no evidence that acetaminophen increased the risk of neurodevelopmental disorders in children.

Federal officials working on the new dietary guidelines had considered limiting men to one drink daily. The final advice was only that everyone should drink less.“There are a lot of reasons people drink alcohol,” said one epidemiologist who led an advisory panel on alcohol. “What we’re saying is health shouldn’t be one of them.”

The Trump administration has signed $11 billion in agreements with African nations, in deals tied to foreign policy goals.A health clinic Mhlosheni, Eswatini, in May. Health funding in Eswatini — where a quarter of adults live with H.I.V. — would drop by 34 percent under the foreign assistance agreement.

Infant heart transplants are extraordinarily rare. A Times health journalist donned scrubs and witnessed how the surgery unfolded.Dr. Maureen McKiernan, left, preparing for a surgery in December alongside Dr. Andrew Goldstone at NewYork-Presbyterian Morgan Stanley Children’s Hospital.