[belorn]

Banning advertisement is the nice way to reduce the social costs of universal healthcare as it only act as a industry regulation.

What follows is usually not bans but taxes. As an example, Sweden uses a rather significant tobacco tax helps to offset the increased healthcare costs. Same for alcohol and now they are considering the same strategy for sugary drinks and sweets.

Once culture has change and almost no one buys it anymore, and the cost makes the product completely uninterested for new customers, then politicians can start to discuss bans of the product itself.