The Tobacco Atlas, published by the American Cancer Society and the World Lung Foundation, lists the chemicals in tobacco smoke. They include arsenic, DDT and lead. So reported Michael Skapinker in an FT article that suggested that tobacco products should not be given to people.

It was interesting to read in the Guardian last weekend of another substance that is causing health concerns and contains arsenic, DDT and lead. It also contains PCBs, trichloroethylene, perchlorate, dibenzofurans, mercury, and benzene. What is it? Breast milk.

Perhaps the moral of this is that the more scientists investigate, the more everything is dangerous.