Fat Doctors, Fat Patients

There has been some discussion recently in news outlets, and on other medical blogs regarding Fat doctors, and their lack of efficacy when instructing pts to lose weight. They should be a better example some say, and they cant tell people to do something that they themselves do not do. The same arguement could be applied to doctors who smoke, or drink, or ride motorcycles without a helmet. The thing is, if a stock broker tells you what stocks to buy, it dopesn't have to mean he is buying them as well, he is just doing his job. This should apply to doctors, but when it comes to unhealthy habits, people want to look for any excuse they can find to not have to break them.