You have to pay to be fat?

Have you heard about the new "fat tax" that's suppose to be issued in January? Well I think its absurd! Some people can't help if they're overweight or not. Some people like being bigger. I don't agree with this because okay, your charging some people for being overweight, but your not charging other when they're anorexic? That's not healthy either is it? No so I'm quite confused at why they'd do something like that.