In most countries with universal healthcare, the universal healthcare provider plays a major role in preventive medicine, nudging people towards healthier lifestyles and influencing government policy on a wide variety of topics, such as food standards, consumption taxation, traffic laws, or pollution regulation. Because it's in their interests to do so, because a healthier population saves them money.

Is there the same motivation to help people live healthy lifestyles in the American healthcare system? Are there any lobby groups with the kind of influence and reach as a universal healthcare provider?