Health effects and regulation Main article: Health effects of tobacco Smoking is one of the leading causes of preventable death globally. There are no safe substances in any tobacco products, from acetone and tar to nicotine and carbon monoxide. The result is what is usually referred to as a "high" that ranges between the mild stimulus caused by nicotine to the intense euphoria caused by heroin, cocaine and methamphetamines. Although several carcinogens were already known at the time for example, benzo[a]pyrene was isolated from coal tar and demonstrated to be a potent carcinogen in , none were known to be contained in adequate quantities in tobacco smoke.
And if a woman wants to get pregnant, smoking can make that harder. You also can find information and support online at:. In , Fritz Lickint of Dresden, Germany, published a paper containing formal statistical evidence of a lung cancer—tobacco link.