The findings, based on an analysis of records from 2.5 million VA patients, support much of what scientists already suspected but contain surprises, too.

The Biden administration said Medicare will negotiate discounts with drug companies on 15 drugs prescribed to treat cancer, diabetes and asthma.

Blockbuster weight-loss and diabetes drugs Wegovy and Ozempic top the list of 15 drugs selected for the second round of federal price negotiations, which are scheduled to begin this year, with resulting bargained prices going into effect in 2027.