- According to the results of a recent systematic review, quitting smoking may produce positive health effects in a matter of weeks.
- The review found that people who quit smoking had a greater reduction in anxiety, depression, and symptoms of stress than people who did not.
- If accurate, these findings could help motivate millions of people looking for more reasons to quit smoking or avoid stopping for fears of negative mental health or social effects.
Each year, smoking cigarettes claims the lives of more than 480,000 people in the United States and more than 8 million people around the world. And, according to the World Health Organization (WHO), smoking is the leading cause of preventable illness, impoverishment, and death worldwide.
Smoking rates have been falling substantially over the last 50 years, particularly in high income countries, with the rate of tobacco use now at 19.7% in the U.S in 2018. In contrast, this rate remains stubbornly high (36.7%) in people with mental health issues.
Some people believe smoking offers mental health benefits, such as reducing stress and anxiety. In one study, it was not just smokers who thought this but also mental health practitioners. Around 40–45% of mental health professionals assumed that smoking cessation would not be helpful to their patients.
Some also believe that mental health symptoms would worsen if they quit smoking. Many smokers worry that they will lose social relationships, either from the irritability that can occur early on during smoking cessation or because they view smoking as a central part of their social life.
According to the Centers for Disease Control and Prevention (CDC), nearly 40 million people in the U.S. continue to smoke cigarettes.
This is why a group of researchers set out to explore how smoking impacts mental health precisely. Their review appears in the Cochrane Library.
The mental benefits of quitting
“Smokers often believe that cigarettes are the crutch they need when they feel low, but there is good reason to think that smoking is actually making them feel worse,” said Dr. Gemma Taylor, the review’s lead author.
“The daily cycle of waking up with cravings, satisfying the cravings through smoking, only to be back wanting another cigarette within hours has an understandable impact on how people feel.
“But get past the withdrawal that many smokers feel when they stop, and better mental health is on the other side,” she continued. “From our evidence, we see that the link between smoking cessation and mood seem to be similar in a range of people. And most crucially, there is no evidence that people with mental health conditions will experience a worsening of their health if they stop smoking.”
If these findings are confirmed, they could offer hope to millions of people afraid to quit smoking for fears of experiencing worsened mental health symptoms.
Knowing that quitting smoking can improve mental and social well-being within weeks could also help keep individuals motivated during withdrawal.
Nicotine and dopamine
Nicotine, the primary active ingredient in tobacco cigarettes, can briefly improve mood.
Dopamine is a neurotransmitter associated with positive feelings. It tends to improve concentration and mood, relax muscles, and reduce stress. These properties give most people an almost immediate feeling of relaxation.
But the positive effects of nicotine wear off quickly.
Smoking and mental health
When someone smokes, it temporarily reduces withdrawal symptoms. This means they must keep smoking at the same rate to avoid withdrawal. This cycle of positive and negative symptoms helps drive nicotine addiction.
But smoking can not provide any long-term or meaningful positive benefits.
Scientists have identified links between mental health and smoking. For instance, one report found that people with mental health disorders smoke at two to four times the average rate of the general population.
Other studies have shown associations between depression and smoking, but the relationship between the two is likely to be complex, and scientists need to carry out more research to understand the details. Depression is a persistent risk factor for nicotine dependency across age groups.