If we can use guilt against smoking, why not against obesity?

Around the globe, we have accepted anti-smoking campaigns to limit the damage that some people willingly do to their bodies. Why is it not okay to do the same with obesity? In essence, both are very similar things, where some individuals hurt themselves, which, as a society, we want to curb. I believe that we should be able to put warning labels on food to discourage unhealthy eating. We should tax higher-calorie food. Being obese is almost as deadly as smoking, so why is it more socially acceptable? The further we enable unhealthy eating habits, the worse we allow obesity to become.