Francois wrote:
You're ignoring how difficult it is for many to change lifestyles because of lack of knowledge and other barriers in particular among low SES folks and minorities. Also kids are extremely affected with no control and the outcomes are a lot worse because that's all they've known.
So yes if we could just zap people's brains into walking and eating well in theory we'd all do better at least for non genetic chronic conditions. But no we just can't do that. And most interventions work well. For 3 months. Then outcomes get negative again. But then you still have a lot of chronic conditions that don't respond to lifestyle changes (T1D, asthma, several autoimmune conditions etc). And then there is cancer. So no it's nowhere near as simple as you think it is.
And I'm not the only one to say that. The entire research community working on interventions for chronic conditions (of which I belong) says that.
So long as medicine continues to offer an "easy" way out of lifestyle problems, there's not really much motivation undertake those difficult lifestyle changes. We will continue to throw medical solutions at lifestyle problems until it bankrupts the country. People are lazy more than they are stupid.
I fully disagree that people don't know at least the very basics of a healthy lifestyle. I can drive a couple of miles down the road and be in a nice pocket of the 3rd world. Among the severe alcoholism, oppressive poverty, and a culture completely socialized in terms of healthcare and education the kids and adults can at least outline the very basics of living a healthy lifestyle. I can personally name hundreds of people, from my own files, who have problems largely of their own creation who know full and well how to help themselves, yet they don't do it.
I don't think many people think of T1D, asthma, autoimmune conditions (I have one) or cancer as primarily lifestyle generated problems. So that's why we have smart people like you searching for medical solutions to those issues. But we, as a culture, have to do a little bit of the work. Diet improvements and a basic level of activity/exercise are only going to reduce a tremendous amount of the burden from the healthcare system so that doctors and researchers can actually get to work helping people who need it, instead of those unwilling to help themselves in the most basic way.