It is irresponsible because this advice basically tells smokers: "If you are unable to quit completely, there is no point in your trying to reduce the amount you smoke. If you are a 3-pack per day smoker and cannot quit completely, then you should just keep smoking 3 packs per day. Don't try to cut down to 1/2 pack per day because it will have no benefit."

The authors admit this in the paper. They write: "This is a cross-sectional study, which only allows us to identify associations, not causal relationships."

The truth is that Dr. Glantz is simply wrong. He is not a medical doctor and therefore has no personal experience treating patients upon which to draw. As a physician, I can testify to the fact that when smokers substantially reduce the amount that they smoke, they experience immediate and significant health benefits.

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