If the government is paying for our health care costs, then the government will inevitably have the power to dictate, not only what types of health care we can receive, but what types of food we can eat and what types of exercise regime we must follow, since diet and exercise affect our health, and the government is paying for our health care. Which further means that the government will have the power to punish us for not following the diet and exercise regime it requires. Which further means that the government must spy on us in our homes to determine if we are following the required regime. The scene in Nineteen Eighty-Four in which a young woman on a two-way television screen in Winston Smith's apartment is barking out orders telling Winston to do his push-ups harder is not just a fictional satire but a logical and inevitable result of government-provided health care.
I raised this sort of question in a post about health care rights and responsibilities.