Young people who start smoking now may get hooked faster.
A team of researchers from the Harvard School of Public Health have found that nicotine levels have increase in cigarettes by 11-percent since 1997. The increase in nicotine was found in all four major cigarette manufacturers and in all types of cigarettes, including menthol and lites.
The report also indicates that manufacturers modified several design features of cigarettes to increase the number of puffs per cigarette. The cigarette makers, however, dispute the findings.