> Drug use is a health-related issue, whether it is a doctor prescribing medications, a patient taking meds off-label, a person self-medicating, an addict, or some kind experimentation. All of these situations are much more personal health concerns than public safety concerns.

Not so fast. "We" have decided that obesity is a public health issue that warrants all manner of intrusions.

I think agree with you about drug use but ....