What about the harm of fine smoke in China?

A puff of fine smoke is less harmful than a puff of coarse smoke. At the same dose, the harm of fine smoke is greater than that of coarse smoke.

Because of the toxic substances contained in the same tar content, the content of highly toxic aromatic ketones is fine smoke > coarse smoke.

It should be noted that the harm of low tar cigarettes is not low. Tobacco contains more than 7,000 chemical components, including more than 250 toxic and harmful substances. Tar is only the carrier of some components. Even if cigarette tar is reduced, it does not mean that other carcinogens and poisons will also be reduced. At the same time, "low tar" cigarettes will produce compensatory smoking.