US health care spending has ballooned to $2.1 trillion, making up roughly 18% of the US economy, driven by a growing, aging population and skyrocketing service price and intensity, according to a new review published in JAMA.

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US health care spending has ballooned to $2.1 trillion, making up roughly 18% of the US economy, driven by a growing, aging population and skyrocketing service price and intensity, according to a new review published in JAMA.