Quitting Smoking and Anxiety: Why It Gets Worse Before It Gets Better

Here's the paradox that trips up a lot of smokers: you quit to improve your health, including your mental health, and you feel more on edge. That feels like evidence smoking was helping — which is exactly the misreading that drives relapse.

Does Smoking Actually Relieve Anxiety?

In the moment, a cigarette can feel calming. Much of that calm is relief from the tension of going without one. The NHS says: you may think smoking helps you relax and deal with stress and anxiety — in fact, the opposite is true. The Cochrane review of 102 studies found anxiety symptoms lower after quitting than with continued smoking, and an earlier review found the improvement equal to or larger than antidepressant treatment for anxiety and mood disorders.

Anxiety in the First Weeks

Anxiety is on the official list of withdrawal symptoms, which peak in the first week and last 2 to 4 weeks. But the picture is more hopeful than most articles suggest: in a study of 101 dependent smokers who stayed completely stopped, anxiety didn't rise after quitting at all — it fell from the first week. The authors suggest that the anxiety other studies recorded may come from lapses — smoking "just one" — rather than from quitting itself.

So some edginess in the first days is normal, and it's temporary. It doesn't mean you need nicotine to function.

How Long Does the Anxiety Last?

For most people, it's part of the two-to-four-week withdrawal window, and the NHS says it can take as little as 6 weeks to start feeling the mental health benefits of stopping. If anxiety is still high after four to six weeks and affecting your daily life, talk to your GP — it may be an anxiety condition that deserves treatment in its own right.

Evidence-Based Strategies

1. Name It

When you feel anxious in the first weeks, naming it — "this is withdrawal, and it passes" — can make it easier to sit with. It's a practical tip rather than a measured treatment.

2. Exercise

A review of 14 studies found a single bout of exercise reduced cravings, withdrawal symptoms and negative mood during the exercise and for up to 50 minutes afterwards, even at low intensity. A walk when anxiety spikes is one of the best-evidenced things you can do.

3. Breathing and Mindfulness

Slow breathing gives anxious minutes a shape; the NHS suggests breathing in for 4 seconds, holding for 5 and breathing out for 6. For mindfulness, one small randomised trial of 88 smokers found mindfulness training gave higher abstinence at 17 weeks than a standard programme (31% vs 6%) — promising, but a single small study.

4. Medication

NRT eases withdrawal, and in one study it reduced the flat, low mood of early withdrawal. Varenicline and bupropion also help people quit, and the EAGLES trial found no significant increase in serious neuropsychiatric side effects compared with patches or placebo, including in people with psychiatric conditions. Tell your doctor about your mental health before starting.

5. Go Easy on Caffeine

Tobacco smoke speeds up how fast your liver clears caffeine; after quitting, the same coffee can roughly double the caffeine in your blood within three weeks, which can feel like anxiety or jitters. Cutting back is an easy win.

6. Protect Your Sleep

Poor sleep makes anxiety worse, and broken sleep is common in the first nights. Keep a regular bedtime, avoid screens and alcohol late, and if a 24-hour nicotine patch disturbs your sleep, ask your pharmacist about taking it off at bedtime.

When to Get Additional Help

Speak to a GP or mental health professional if you have:

Panic attacks
A racing heart with chest pain, dizziness or breathlessness — get urgent help for these
Anxiety stopping you working or managing relationships
Low mood alongside anxiety, or thoughts of harming yourself — get help straight away
Anxiety that isn't improving after four to six weeks

If you take medicines such as clozapine or olanzapine, tell your doctor you're quitting: smoking speeds up how fast the body clears them, so doses may need lowering once you stop.

FAQ

Does quitting smoking cause anxiety long-term?

No. The Cochrane review found anxiety symptoms lower after quitting than with continued smoking, and in one study of people who stayed completely stopped, anxiety fell from the first week.

Why do I feel more anxious after quitting smoking?

Anxiety and irritability are part of nicotine withdrawal, which peaks in the first week and lasts two to four weeks. Extra caffeine in your blood after quitting and broken sleep can add to it. It is real, and it passes.

Should I go back to smoking if my anxiety is severe after quitting?

No — smoking would relieve the withdrawal for a while and bring it back between cigarettes. Talk to your GP or pharmacist about NRT dosing or varenicline, and get help for panic attacks or severe low mood.