A new study uncovers a brain mechanism that could be targeted for new medications designed to help people quit smoking without gaining weight. This research, funded by the National Institute on Drug Abuse (NIDA), part of the National Institutes of Health, shows that a specific subclass of brain nicotinic receptor is involved in nicotine’s ability to reduce food intake in rodents. Prior research shows that the average weight gain after smoking is less than 10 pounds, but fear of weight gain can discourage some people who would like to quit.

In the study, to be published in the June 10 issue of Science, researchers found that a nicotine-like drug, cytisine, specifically activated nicotinic receptors in the hypothalamus — a brain center that controls feeding. This resulted in the activation of a circuit that reduced food intake and body fat in a mouse model. This effect was very specific, since a drug that prevented cytisine from binding to its hypothalamic receptors blocked the reduction in food intake.

Through the use of tobacco, nicotine is one of the most heavily used addictive drugs and the leading preventable cause of disease, disability, and death in the United States. Despite the well-documented health costs of smoking, many smokers report great difficulty quitting.

"These mouse models allow us to explore the mechanisms through which nicotine acts in the brain to reduce food intake," said Dr. Marina Picciotto, of Yale University, New Haven, Conn. and senior author for the article.

"These results indicate that medications that specifically target this pathway could alleviate nicotine withdrawal as well as reduce the risk of overeating during smoking cessation," said NIDA Director Dr. Nora D. Volkow. "Although more research is warranted, such a highly selective compound might be more effective than drugs that act on more than one type of nicotinic receptor."

For information on tips to maintain a healthy weight while quitting smoking go to Forever Free: Smoking and Weight, a publication of the National Cancer Institute. For additional information on resources to help quit smoking, go HERE

The study can be found online at: www.sciencemag.org/.




A new drug for people who want to quit smoking? Maybe within a few years we learn that this drug is more harmful than smoking.

This drug sounds good. I have talked to many that have gained weight while trying to quit smoking. It would be really good to have a drug that can help quit smoking as well as help to prevent the weight gain.

An interesting article. Any drug that alleviates nicotine cravings as well as addressing weight gain has got to be a winner. Let's hope that the results obtained from mouse studies translates to humans. As I have an active interest in smoking cessation I'll be avidly watching for developments. Cheers George

Now this is interesting research. This could benefit those people who have been meaning to quit but struggles to control nicotine addiction.

Research like this is amazing...I am now smoke free having used electronic cigarettes nearly 3 years back but I wish I could have just taken a drug. Hopefully this will be available sooner rather than later to help all the people out there who still rely on nicotine.