Medicare spending on “skin substitutes” made of dried placenta has soared as doctors pocket lucrative discounts from sellers.

© Photoillustration by The New York Times

The government should make it easier to get access to GLP-1s.

Researchers reviewed data from more than 56 million pregnancies to examine the connection between diabetes and A.D.H.D., autism and intellectual disability.

© Octavio Jones for The New York Times

Two significant programs that invested in research on diabetes, dementia, obesity and kidney disease have ended since the start of the Trump administration.

© Haiyun Jiang for The New York Times