Earlier quoted context omitted.
People eating more than they should, getting diabetes, and then consuming more medical services is a form of poor regulation of consumption. The overapplication of OxyContin is another form of unregulated consumption. Now we have the semaglutides and will see the same effect.
The USA has a 38% obesity rate vs the UK at 29% (for men). Given both exist quite far apart on the public/private healthcare debate, I don’t see how this supports your argument at all. Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7670332/ I’m not going to debate the others because I don’t know much about them and, since your argument fell apart at light prodding, I don’t think you do, either.
I was similarly convinced that moral hazard in healthcare was not a problem because consumers don't get more healthcare than they need. I know now that this is not the case.