1.   Young smokers tend to buy the brands that are most heavily advertised.

2.   Because cigar smokers tend to puff rather than inhale, the cancer-causing substances stay in the mouth and upper airways longer, he said.

3.   Because smokers tended to drag more deeply on those cigarettes they produced a certain type of lung cancer.

4.   Levy and Marimont note that smokers tend to be people who also drink too much, exercise too little, eat fewer green vegetables, and have less money.

5.   Most smokers tend to keep on smoking.

6.   Smokers also tended to develop cancer at younger ages than nonsmokers.

7.   Smokers tend to stick for years to one brand, usually their first one, so companies find it difficult to increase sales by getting smokers to switch brands.

8.   The investigators excluded people who had ever smoked because smokers tend to be thinner and also tend to have a higher death rate.

9.   But it is not the final answer in the smoking habit differences, he cautioned, noting that Hispanic Americans smokers also tend to use fewer cigarettes.

10.   Smokers tend to be from lower income groups.