Shops should not be allowed to sell any food or drink that have been scientifically proved to be bad for people's health. To what extent do you agree or disagree?

Public health debates increasingly focus on whether governments should restrict unhealthy food in the same way they regulate tobacco, alcohol or unsafe products. I partly agree that shops should face stricter limits on clearly harmful food and drink, but a complete ban on all products scientifically linked to poor health would be too broad and difficult to justify.