Taxing is a good idea, it could also help the health system to provide campaigns and treatment to those who choose not to eat healthy. It will make the companies try to produce healthier products so they can avoid the taxes and is not forbidding anyone to buy the unhealthy stuff, you just have to pay a little more to do it and it is still your choice.
Off course this will only work in a low poverty country, because the poor people need the high energy intakes at a low price to survive. So only junk food that is considered processed (ingredients cannot be taxed) and a luxury can be taxed, and it becomes quite a difficult task to do it.







