Should smokers be allowed free NHS treatment?

There has been question about whether overweight and smoking individuals should be withheld treatment. Even though it is self inflicted, the NHS is for public health. It would be immoral and unfair to deny individuals who live in this country treatment. The NHS professionals are taught to be non-judgemental and the policies of the NHS should follow suit. The NHS should care for, not punish, sick people, after all overweight people and smokers have a far higher incidence of illness.