Why is cigarette smoking dangerous?
In 1960’s, medical research on tobacco showed smoking to be strongly linked to heart and lung diseases. Smoking may be even more dangerous now than 30 years ago because the lower levels of tar and nicotine in cigarette brands make smokers inhale more deeply. In the US . . . . Only 42 of male lifelong smokers reach the age of 73 compared to 78% of non-smokers 25.7% of the adult population (47 million people) continue to smoke despite repeated warnings on the hazards of cigarette smoking.
