Healthcare is very expensive in the US to say the least. Unlike other developed countries healthcare expenditure account for a high percentage of national budget. At the micro level, individuals spend 19.3% of their personal expenditures on healthcare according to BEA data. Or to put it another way, in 2017 Americans spent about one fifth of their expenditures on healthcare.
The following chart shows the relentless rise in healthcare inflation from 1959 to 2017:
Click to enlarge
Source: Health Savings Accounts: The Intersection of Retirement and Health Care, Franklin Templeton Investments