Video answer: Don't smoke | cigarette cause cancer | heart disease
Top best answers to the question «When did cigarettes start causing cancer»
Scientists have known that smoking causes cancer since at least the 1940s, when epidemiological studies showed a clear link between smoking and lung cancer. Experiments conducted in the 1950s confirmed that the chemicals in cigarette smoke could cause cancer in mice.
Video answer: How do cigarettes affect the body? - krishna sudhir