ADHD and Smoking: Why Nicotine Is More Appealing

"When I smoke, my head gets sorted out."

I heard this sentence for years and for a long time I did not believe it. It seemed to me a polite form of fooling yourself. Then I began writing down my own everyday movements: when I cannot start a task, I get up and go to the kitchen, then I come back, and sometimes those two minutes get me to open the work. No one calls this dependence, but the logic of what I do is the same: trying to correct the setting inside with a stimulus from outside.

Seeing that similarity changed how I looked at the sentence. Behind this sentence that sounds like an excuse there is a real mechanism, and understanding that mechanism also explains why quitting is so hard.

How common it is

The relationship between ADHD and smoking is one of the most consistently demonstrated links in research.

The meta-analysis by Lee and colleagues (2011) shows that children diagnosed with ADHD in childhood are markedly more likely to use nicotine in adolescence and adulthood than those without ADHD.

The study by Kollins, McClernon and Fuemmeler (2005), in a large community sample of young adults, reveals a finer detail: regardless of whether there is a diagnosis, there is a linear relationship between the number of ADHD symptoms and smoking. As symptoms rise:

• The age of starting to smoke falls.
• The number of cigarettes smoked increases.

In the same study, symptoms of hyperactivity and impulsivity independently predicted the risk of starting to smoke, even when the inattention symptoms were taken into account.

As the number of symptoms rises, people start smoking earlier and smoke more. This relationship is not limited to the presence of a diagnosis.

Why nicotine is more appealing in ADHD

Its effect on attention and arousal

Nicotine acts on many systems in the brain, and one of them concerns attention and arousal. In the short term, in some people, it can create a feeling of gathering attention and focusing.

The meta-analysis by Heishman, Kleykamp and Singleton (2010) reports that nicotine shows small to moderate effects in some cognitive domains even in people who are not in withdrawal; in six of the nine domains examined, the effect was significant. The authors' own caution is important too: how these effects in laboratory tasks translate into everyday performance has not been studied.

So the feeling of "my head gets sorted out" is not entirely imagined. But what was measured is not that cigarettes save a person's day; it is a difference of a few points in a controlled test.

Because the attention and arousal systems are already strained in ADHD, this short-term effect of nicotine can feel like a much more marked difference.

Self-medication without noticing

This effect can turn smoking, without the person noticing, into a kind of self-medication. The person reaches for a cigarette to gather attention, to calm restlessness or to cope with boredom.

The problem is this: this "medication" is addictive, carries serious health risks and its effect is short-lived. When the effect passes, withdrawal begins, and the symptoms of withdrawal closely resemble the symptoms of ADHD.

Impulsivity and stimulus seeking

Impulsivity can increase experimentation and risk-taking in adolescence. Stimulus seeking also strengthens the pull toward new and stimulating experiences. These two partly explain why the starting age for smoking is earlier.

Boredom and breaks

Tolerance for boredom can be low in ADHD. A cigarette break offers a short escape from a dull task, a movement, a ritual. This strengthens the habit.

Why quitting is harder

It is often said that people with ADHD struggle more to quit smoking, and there are a few explanations for this.

Withdrawal symptoms mimic ADHD. In nicotine withdrawal, distractibility, restlessness, irritability and difficulty concentrating are seen. In someone who has ADHD, these symptoms pile on top of difficulties that are already there and can be felt much more intensely.

The "helper" that is lost. If a person has been leaning on nicotine to gather attention without realizing it, when they quit they feel as if they have lost that support too.

Impulsivity. When a cigarette is offered, or in a stressful moment, the decision "just one" can be made very quickly.

Planning and sustaining. Making a plan to quit and sustaining it for weeks is especially hard in an area where executive functions are strained.

Do ADHD medications increase smoking or dependence

A frequently asked worry is whether the stimulant medications used in ADHD lead to substance use later on.

The meta-analysis by Wilens and colleagues (2003) found no evidence that stimulant treatment in childhood increases later substance use; some analyses pointed to a protective relationship in the opposite direction. The international consensus statement also emphasizes that there is no evidence that medication treatment of ADHD under a doctor's supervision increases the risk of substance use (Faraone et al., 2021).

The medication decision and choice belong entirely to the doctor. The general framework is in the articles ADHD medication treatment and are ADHD medications addictive.

Approaches that can make quitting easier

The following do not replace a treatment plan; but they take into account the ways in which ADHD makes the quitting process harder.

Talk about ADHD with your doctor too. When getting support to quit smoking, if you have an ADHD diagnosis or suspicion, it is important to say so. Part of the difficulties in the quitting process may be related to ADHD, and the treatment plan can be shaped accordingly.

Use evidence-based quitting support. There are support methods and medication options with demonstrated effectiveness available at smoking cessation clinics and under a doctor's supervision. In Türkiye, information and referral can be obtained from the ALO 171 Smoking Cessation Counseling Line.

Identify the triggers in advance. In which situations do you reach for a cigarette: a boring task, stress, coffee, certain friends, breaks? Writing these down lets you see the impulsive moments ahead of time.

Put something in its place. The cigarette met a need: a break, movement, stimulation, attention. Meeting that need another way makes quitting easier. A short walk, cold water, chewing something, a job done with the hands.

Increase movement. Exercise can both help ease withdrawal symptoms and have a positive effect on ADHD symptoms. The details are in the article ADHD and movement.

Add friction. Not keeping cigarettes at home, arranging things to make buying harder. In the impulsive "just one" moment, one more step of difficulty is often enough.

Do not treat a slip as a catastrophe. Smoking once does not end the process. The thought "everything is ruined" often leads to a complete return. The details are in the article all-or-nothing thinking in ADHD.

Keep the quitting days light. Because distractibility can increase in the first days of quitting, if possible, timing these days away from a period of heavy work, exams or important deadlines makes things easier.

A similar mechanism with caffeine

There is a similar picture between smoking and caffeine: both can be used for self-medication in ADHD. The place of caffeine in ADHD is in the article caffeine and self-medication in ADHD.

A common mistake

The mistake I see most often is setting up the quitting process as a test of willpower. The sentence "this time I'm determined" is not a plan, it is a feeling; when the feeling passes, no structure is left.

The second is not talking about the ADHD side at all. When someone getting quitting support says their attention is scattered, this is usually put down to withdrawal. If there is an unevaluated ADHD underneath, that scatteredness does not go away when the withdrawal ends, and the person thinks "so quitting didn't work for me."

The third is timing the quitting for the busiest period of life. A well-meant decision combined with the worst timing undermines itself.

What remains

Smoking rates are higher in people with ADHD, they start earlier and it is harder to quit. As the number of symptoms rises, this relationship gets stronger.

One reason is that the short-term effect of nicotine on attention and arousal turns smoking, without the person noticing, into a kind of self-medication.

What changed most in me while writing this article: in place of the sentence "can't quit," I put the sentence "is trying to quit without knowing what it compensates for." Quitting something is hard until it is decided who will do the work that thing was doing. This holds for cigarettes, and for my going back and forth to the kitchen.