Your assumption is that everyone is unhealthy but that's not true, we want a public official who cares about health because we want to set a HIGHER standard for health than already exists. If you have public officials who conspire to poison people who are already irresponsible and unhealthy, that is a recipe for disaster. It's not authoritarian to criminalize poisons that are being sold as food, that is humanitarian.  

 Not to mention, there are far too many public health officials that already exist and do far more authoritarian things, and they need to be removed. Replaced by officials that actually care. Ideally they wouldnt even exist, but we dont live in some idealistic utopia