Expanding Medicaid coverage did not reduce firearm suicide rates among most groups of American men, according to a new analysis that found a measurable protective effect in only one demographic. States that paired Medicaid expansion with a waiting period for firearm purchases had the lowest firearm suicide rates of any group the researchers examined, and states with neither had the highest. Medicaid expansion produced documented health benefits and appears to have reduced suicide in younger populations, while failing to move firearm suicide rates among most middle-aged and older men. Firearm suicide rates among men rose from 2000 to 2023 in both Medicaid expansion and non-expansion states. States combining Medicaid expansion with a waiting period for firearm purchases had the lowest firearm suicide rates of any group examined, and states with neither had the highest.