Worried about gaining weight when you quit smoking? Here is what to expect and what can help.
Reviewer: Ami Hansen (Head of Patient Care, RN)
Stoptober is a chance to quit smoking, but the fear of gaining weight can make that decision harder. It is a reasonable concern and deserves a straight answer. Some people do gain weight after quitting, but the amount varies, and there are ways to manage it. Most importantly, concern about your weight should not keep you smoking.
The honest bit: some weight gain is common
Research suggests that people who remain smoke-free gain an average of around 4 to 5 kilograms in the first year, with most of the gain occurring in the first three months. An average is not a prediction for you: some people gain more, some gain very little, and some lose weight.
Nicotine can suppress appetite and slightly increase the rate at which your body uses energy. When you quit, you may feel hungrier. Eating can also become a substitute for the familiar hand-to-mouth habit. Knowing what may change helps you plan for it.
Why weight gain should not stop you
The health benefits of quitting smoking remain substantial even if you gain weight. Research has found a cardiovascular benefit from quitting despite subsequent weight gain. You can also work on your weight over time; continuing to smoke carries serious risks for your heart and wider health. Read more about your heart and your weight.
How to manage your weight while quitting smoking
If you are concerned about weight gain, a few practical steps may help:
- Make quitting your priority. Avoid pairing it with a crash diet. Focus on routines you can maintain while you adjust to being smoke-free.
- Eat regular, balanced meals. Skipping meals may leave you hungrier and more likely to snack. Meals with protein and fibre can help you feel satisfied.
- Keep your hands and mouth busy. Try sugar-free gum, a glass of water or chopped vegetables when you want something to reach for.
- Move when a craving strikes. A short walk can give you a change of scenery and help you manage the urge to smoke. See our guide to movement that matters.
- Use stop-smoking support. Nicotine replacement therapy and other treatments can improve your chances of quitting. Some may also help with weight gain while you use them. Ask your pharmacist, GP or local stop-smoking service what is suitable for you.
If weight is the real barrier
You do not have to sort out every health goal at once. If fear of gaining weight is delaying your quit attempt, you can get support for both concerns. A stop-smoking service can help you quit, while weight-management support can help you build sustainable eating habits alongside it.
Where to get quit support
Stoptober offers free tools, including a Personal Quit Plan and the NHS Quit Smoking app. Your GP, pharmacy or local stop-smoking service can also help you choose a treatment and make a plan. You do not have to rely on willpower alone.
Where we can help
Envigore does not provide smoking cessation treatment. If weight gain is a concern while you quit, our clinician-led team can support you with weight management alongside the quit support you receive elsewhere. Book a consultation with Envigore to explore your options.
Frequently asked questions
These questions reflect the guidance above and are reviewed by our clinical team before publication.
Not necessarily. On average people gain around 4 to 5 kilograms in the year after quitting, but that is only an average. Many gain very little, and some lose weight. With regular meals, movement and stop-smoking support, you can keep any gain small.
Nicotine slightly suppresses appetite and lifts your metabolism, so when you stop, both reverse: your appetite returns and you burn a touch fewer calories. On top of that, food often replaces the hand-to-mouth habit of smoking. Both are manageable with a few simple steps.
Yes, and the maths is not close. You would have to gain a huge amount of weight to offset the reduction in heart attack, stroke and cancer risk that quitting brings. A few pounds is a tiny price, so do not let it keep you smoking.
It is usually better to make quitting the priority first, rather than pairing it with a strict diet that sets you up to fail at both. Once you are steady as a non-smoker, healthy eating and activity make managing your weight much easier, and quitting makes exercise easier too.
Regular balanced meals with enough protein and fibre, keeping your hands and mouth busy, staying active and sleeping well all help. So does stop-smoking medication, which blunts weight gain as well as improving your chances of quitting. Support from a pharmacy or stop-smoking service makes a real difference.
+ Sources
- NHS Better Health. Stoptober and quit-smoking support and what could happen when you quit smoking.
- Aubin, H.-J., et al. (2012). Weight gain in smokers after quitting cigarettes: meta-analysis. The BMJ, 345, e4439.
- Clair, C., et al. (2013). Association of smoking cessation and weight change with cardiovascular disease among adults with and without diabetes. JAMA, 309(10), pp. 1014–1021.
About Your Clinical Team
This content was medically reviewed and approved by Danny Gian Hou Chu, a HCPC-Registered Advance Paramedic Prescriber (PA38670), who oversees all prescribing decisions at Envigore.
All prescriptions are dispensed by Right Medicine Pharmacy, a GPhC-Registered Pharmacy (No. 9012382).
Nutritional guidance and lifestyle support is provided by Veronica Giudice, a HCPC-Registered Dietitian (DT26570) and British Dietetic Association member.
Last medically reviewed: September 2026