It's not just boomers (though they are the biggest part of it).
Americans of all ages are spending more on healthcare, and seeking more healthcare interventions than in previous decades.
I'm sure ADHD medications / antidepressants / GLP-1s are huge drivers.
This isn’t surprising. The population overall is aging. Millenials are now the largest cohort and are approaching middle age. Until recently we’ve seen the number of insured individuals rise consistently and our medicine continues to advance. More older adults have access and need more healthcare