To add. Re the lumping together of "worklessness" and obesity.
Firstly, many people who are overweight are working (although that doesn't necessarily mean they're not in poverty especially with increased cost of living).
Secondly, lots of people who aren't currently working (whether job seeking or unable to work) aren't overweight.
Thirdly, although the weight loss drugs may perhaps be helpful for some people, the issue of "worklessness" won't be addressed by weight loss drugs. Likewise NHS costs actually.
The way to address "worklessness" (and obesity) is:
a) Sort out the NHS and social services. Holistic care for physical and psychological health issues, and help for environmental and social issues.
Including prompt tests and an end to the fobbing off culture, that sees people end up more ill by the time they're finally diagnosed or helped - so then needing more or longer term care (terrible for the individual and costly for the economy).
Continuity of care is important, as is longer GP appointments - 5/10 minute appointments and often with a different doctor every time makes it easy to miss or delay symptoms.
b) Housing. Specifically more council housing. Bad or insecure housing harms health (as published in the British Medical Journal). Housing issues cost the economy billions.
c) Address poverty (which would go a long way towards addressing chronic stress and the ill health consequences of that. Again costing the economy billions. Address through a supportive benefits system, improved child maintenance system, improved social services, and job and training opportunities. And of course, more council housing.
d) Employers. Crack down on the widespread discrimination against older, disabled, and career gap candidates. Plus reintroduce training on the job.
So really it's two separate issues being wrongly conflated. Obesity isn't the cause of unemployment. The above issues are the cause. I suspect the confusion came about because unemployment can cause obesity (due to the poverty and chronic stress).
So to finish. Yes, treat the symptoms including obesity. But also address the causes. Both re obesity and separately re "worklessness".