There is like a multi decade lag between walking less and health issues. There's no way you're going to see correlations like that. Hell I doubt you will even

There is like a multi decade lag between walking less and health issues. There's no way you're going to see correlations like that. Hell I doubt you will even see much correlation between car ownership rates and miles driven in a car or walking distances but at least that's a correlation that you might possibly see in data.