A s Congress eyes sweeping cuts to Medicaid, the health care program for low-income adults that serves about 20% of people living in the U.S., a new study has a sharp conclusion: cuts to Medicaid will cost lives. The study, published in the National Bureau of Economic Research on May 5, tracked nearly 40 million people who gained Medicaid through state-based expansions under the Affordable Care Act between 2010 and 2022. It found that during that time, Medicaid expansions increased enrollment