Quit smoking, improve mood

In the new study, researchers tracked the symptoms of depression in people who were trying to quit smoking and found that they were never happier than when they were being successful, for however long that was.

Based on their results, the authors recommend that smokers embrace quitting as a step towards improving mental as well as physical health, said Christopher Kahler, corresponding author and research professor of community health at the Warren Alpert Medical School of Brown University.

Quitting is not, as some smokers may fear, a grim psychological sacrifice to be made for the sake of longevity.

“The assumption has often been that people might smoke because it has antidepressant properties and that if they quit it might unmask a depressive episode,” said Kahler.

“What’s surprising is that at the time when you measure smokers’ mood, even if they have only succeeded for a little while, they are already reporting less symptoms of depression.”

Kahler and colleagues from Brown, The Miriam Hospital, and the University of Southern California studied a group of 236 men and women seeking to quit smoking.
They received nicotine patches and counselling on quitting and then agreed to a quit date. Participants took a standardised test of symptoms of depression a week before the quit date and then two, eight, 16, and 28 weeks after that date.

All but 29 participants exhibited one of four different quitting behaviours: 99 subjects never abstained; 44 were only abstinent at the two-week assessment; 33 managed to remain smoke-free at the two-and eight-week checkups; 33 managed to stay off cigarettes for the entire study length.

The most illustrative subjects were the ones who only quit temporarily. Their moods were clearly brightest at the checkups when they were abstinent. After going back to smoking, their mood darkened, in some cases to higher levels of sadness than before.