The effects of smoking on human health are enormous; yet, little is known about the pharmacologic effects of smoking on the human body apart from the effects of nicotine.

Smoking affects all aspects of health, really, ... People know it harms them, but the harm is not immediate. The nicotine is addictive, but it is all the other chemicals - the umpteen carcinogens which can affect your heart and which can cause cancer, and which can affect pregnancy and your potency and libido - which come into play later on, with prolonged use.

These studies showing for the first time that smokers have reduced levels of MAO in their brains and in certain peripheral organs shed mechanistic light on some of the more puzzling aspects of smoking, including a reduced rate of Parkinson's disease in smokers and a high rate of smoking among people with depression and those addicted to other substances.

You may tend to get cancer from the thing that makes you want to smoke so much, not from the smoking itself.

Smoking is the most beautiful and delicious evil created by mankind.

Cigarette smoking has an enormous negative impact on people's health, and it drives up the cost of health insurance and health care for all of us,