How Quitting Smoking Affects Mental Health
A clear UK guide to how quitting smoking affects mental health, the early weeks and the evidence on mood.
The short answer
It helps. Quitting smoking is linked to better mental health over time.
Early days
Mood can dip for a few weeks, then improves.
The myth
Smoking eases withdrawal, not real stress.
How quitting smoking affects mental health
Quitting smoking tends to be good for your mental health, not bad. Evidence shows that stopping is linked to less anxiety, depression and stress and to better mood over time, even though the first few weeks can feel harder as your body adjusts. The long-term picture is positive.
This can be surprising, since many people feel smoking helps them cope. It helps to separate the short-term adjustment from the longer-term gain, then to understand why cigarettes feel calming when they are not. This page explains the early weeks, the evidence on mood and why quitting helps.
Let us look at the early days, the myth and the longer-term picture.
If you smoke and have found it a comfort during hard times, none of this is meant to dismiss that experience. The point is more hopeful than that, since it means the calm you are looking for does not depend on cigarettes at all and can be there without them.
The myth that smoking relieves stress
It feels like smoking calms you, though the picture is more complex. Nicotine relieves the withdrawal that builds between cigarettes rather than real stress, so the relief you feel is your body returning to normal, not a genuine lift, which keeps the cycle of dependence going.
Seen this way, the cigarette is solving a problem it created in the first place. The tension that builds before a cigarette is largely withdrawal from the last one, so smoking simply resets you to where a non-smoker already sits, rather than lifting you above it.
- The feeling: a cigarette seems to ease tension and help you relax.
- What is happening: it is mostly relieving nicotine withdrawal.
- The cycle: withdrawal returns, so you reach for the next cigarette.
- The reality: the underlying stress is still there afterwards.
Breaking that cycle is freeing. Once you are past withdrawal, you are no longer riding the dips between cigarettes, which is part of why people often feel calmer and more in control after they quit, rather than more stressed.
This does not mean it feels easy from day one, since the early adjustment is real. It does mean the long-term direction is toward steadier mood rather than away from it, which is the opposite of what many people expect when they first think about stopping.
Mental health after quitting
Illustrative pattern, varies by person.
The early weeks
It is fair to expect a bumpy start. In the first days and weeks, withdrawal can bring irritability, restlessness and low mood, which is a normal and temporary part of your body adjusting rather than a sign things are going wrong, easing as you get through it.
These early feelings are real but short-lived, tending to settle within a few weeks. It can help to be kind to yourself during this stretch, to lean on support and to remember that the dip is part of the process, not the destination. If low mood or anxiety feels severe or lasts well beyond the early weeks, that is worth taking seriously and speaking to your GP about.
Want support to quit?
Switching to vaping is far less harmful than smoking and can help you through the change. Browse the range or ask our team.
What the evidence says
The research is reassuring. A large review of many studies found that stopping smoking is linked to reduced anxiety, depression and stress and to improved mood and quality of life, with the benefit similar for people with and without mental health conditions, so quitting is unlikely to worsen your mental health.
People sometimes worry that quitting will harm their mood or their social life, though the evidence does not bear that out. The improvements tend to show once you are past the first few weeks, often from around six weeks onward. If you live with anxiety or depression, quitting can sit alongside your existing treatment, so it is worth telling your GP your plans so they can support you and adjust anything if needed.
- Less anxiety and depression: linked to lower levels over time.
- Lower stress: and improved mood and quality of life.
- For everyone: the benefit holds with or without a diagnosis.
- Get support: tell your GP, especially if you have a condition.
Ways to protect your mood while you quit
A few simple things make the early weeks easier on your mood. Staying active even a little, keeping a routine, getting outside and leaning on people you trust all help steady how you feel while your body adjusts. Planning around your triggers means fewer moments where a craving catches you low.
It also helps to line up support before your quit date rather than going it alone. A free stop smoking service offers practical help and a friendly check-in, while using nicotine replacement or vaping can take the edge off withdrawal so the adjustment feels gentler. If you are already under the care of a GP or mental health team, looping them in means your quit can be supported alongside everything else.
If you want to dig deeper, see our explainer on common withdrawal symptoms. It pairs well with our guide on psychological strategies that help you quit and our look at how sleep changes after you quit.
For the full set of guides, the quit smoking hub brings everything together in one place.
The bottom line: quitting smoking is linked to better mental health over time, with less anxiety, depression and stress and improved mood, while the benefit holds for people with and without mental health conditions. The first few weeks can feel harder as withdrawal settles, though that dip is temporary. Smoking relieves withdrawal rather than real stress, so breaking the cycle often leaves people calmer. If low mood feels severe or lasting, speak to your GP.
Quitting and feeling the strain?
Switching from smoking to vaping is far less harmful and can help you through the change. Our vape starter kits make it simple. You can also speak to the Vape Chaos team, plus a stop smoking service.
Frequently asked questions
How does quitting smoking affect mental health?
Quitting tends to improve mental health over time. A large review of many studies found that stopping is linked to reduced anxiety, depression and stress and to better mood and quality of life, compared with continuing to smoke. The first few weeks can feel harder as withdrawal settles, though that dip is temporary and the longer-term picture is positive.
Does smoking actually relieve stress?
Not in the way it feels like it does. Nicotine relieves the withdrawal that builds up between cigarettes rather than real stress, so the relief is your body returning to normal rather than a genuine lift. The underlying stress is still there afterwards, while the cycle of withdrawal and relief is part of what keeps smoking going.
Will quitting smoking make my anxiety or depression worse?
The evidence does not suggest so. A large review found the link between quitting and better mood held for people with and without mental health conditions, so there is no reason to expect quitting to worsen anxiety or depression. The first few weeks can feel harder, though mood tends to improve after that. Tell your GP so they can support you.
How long does the low mood last after quitting?
For most people the dip in mood from withdrawal is short-lived and settles within a few weeks. The improvements in mood often show from around six weeks onward. If low mood or anxiety feels severe or lasts well beyond the early weeks, that is worth taking seriously and speaking to your GP about for support.
Can I quit smoking if I have a mental health condition?
Yes. The evidence suggests it is likely to help rather than harm your mental health. Quitting can sit alongside your existing treatment. It is a good idea to tell your GP or mental health team your plans, so they can support you and adjust anything if needed. A stop smoking service can also offer practical help through the change.
