cigarette lighter riddle There are 3 men in a boat with 4 cigarettes and no matches, how do they manage to smoke? Riddle of the Week #6:

You cant necessarily see lung deterioration or the progression of heart disease, but you can see tooth discoloration every day when you look in the mirror

International statistics show that there are about 8 million deaths each year, mostly (80%) in low- and middle-income countries, equivalent to a total economic cost of US$1.4 trillion each year [6]

That's just a fact, and nothing about said fact is surprising

The CDC says it causes heart disease and lung cancer in non-smoking adults and is a known cause of sudden infant death syndrome or SIDS, respiratory problems, ear infections and asthma attacks in infants and children