Tobacco companies have increased the nicotine levels in cigarettes by 10 percent over the past 6 years, according to the Massachusetts Department of Health. Massachusetts is one of three U.S. states to require tobacco firms to disclose the nicotine content of their products, and has been tracking nicotine levels since 1998.

The Associated Press reported Aug. 29 that state officials said that the amount of nicotine delivered to smokers has risen steadily, regardless of cigarette brand, making it easier for new smokers to get addicted and harder for current smokers to quit.

"We want healthcare providers to know that smokers are getting more nicotine than in the past and may need additional help in trying to quit," said Massachusetts Public Health Commissioner Paul Cote Jr.

Nicotine levels in Kool cigarettes -- popular with African-American smokers -- rose 20 percent.

In 1998, 84 percent of cigarette brands fell into the highest range for nicotine delivery; in 2004, that figure had risen to 93 percent. So-called "light" cigarettes delivered as much nicotine as other cigarettes.

"As more and more people become aware of the dangers of smoking and the importance of quitting, we see products that are more addictive," noted Massachusetts state Rep. Peter J. Koutoujian (D-Waltham), an industry critic.

Cigarette companies did not respond to inquiries on the report.