Smoking and Weight Loss: Quit Without Gaining (2027)

Key points

Smoking is never a way to lose weight. Nicotine burns a little extra energy and blunts hunger, so smokers weigh a few kilos less on average, but heavy smokers often weigh more and store more fat around the middle.
Nicotine, vaping and patches are not weight-loss tools. Patches and other quit aids are there to help you stop smoking. People who switch from cigarettes to vaping still tend to gain weight.
Most people gain some weight after quitting. In a large meta-analysis the average was about 4 to 5 kg after a year, most of it in the first three months, but about one in six quitters lost weight.
Quitting is still the best health step you can take. Even with weight gain, the risk of dying from heart and blood vessel disease falls clearly. Keeping the gain small also limits the temporary rise in diabetes risk.
Quit first, then lose weight. Aim to keep your weight steady while you stop, with regular meals, crunchy food within reach and short walks for cravings. Once you are smoke-free, start losing weight with good food and walking.

Does smoking cause weight loss? The short answer

Smoking does not make you lose weight in any healthy or useful way. Nicotine slightly speeds up how much energy your body uses and dulls your appetite, which is why smokers weigh on average about 4 to 5 kg less than non-smokers.

That small difference comes at a huge price. Tobacco damages the heart, lungs and blood vessels, and it raises the risk of many cancers. No doctor would ever suggest smoking to control weight, and neither do we.

The picture is also less simple than “smokers are thinner”. Researchers have found that people who smoke the most cigarettes a day often weigh more than light smokers or people who never smoked. This probably reflects a mix of habits that tend to go together, such as little movement and a less healthy diet.

Smoking also changes where fat is stored. It makes the body less sensitive to insulin and is linked to more fat around the waist. A genetic study of almost 150,000 people found that, for the same BMI, heavier smoking was linked to a larger waist.

That matters, because fat deep in the belly is the most harmful kind for the heart and blood sugar. You can read more about it on our page about belly fat.

What happens to weight when you smoke and when you quit
Topic	While you smoke	After you quit	What you can do
Energy use	Slightly higher, because nicotine acts as a stimulant	Drops back once nicotine is gone	Add daily walks to make up the difference
Appetite	Often dulled by nicotine	Comes back, sometimes stronger for a while	Eat regular meals so hunger does not build up
Typical weight	A few kilos lower on average, but higher in many heavy smokers	Rises by about 4 to 5 kg in a year on average	Aim to stay steady first, then lose weight
Belly fat	More fat around the waist for the same weight	Weight gain can add to the waist too	Combine good food with walking to shrink the waist
Health overall	High risk of heart disease, lung disease and cancer	Risks start to fall, even if you gain some weight	Stay smoke-free: this is the biggest win

Averages hide big differences between people. The table shows the general direction, not what will happen to you.

Does nicotine or vaping help you lose weight?

No, nicotine and vaping are not a safe or sensible way to lose weight. Nicotine has the same small effect on appetite and energy use whether it comes from a cigarette, a vape, a pouch or a patch, and it is highly addictive in every form.

Does nicotine cause weight loss?

Nicotine acts on the brain and nervous system in a way that, in the short term, lowers appetite and raises energy use. A review of the research estimates that smoking raises the energy your body uses over a full day by around 10 %.

The same review explains that quitting has the opposite effect: energy use drops and people eat more. In one study, quitters ate about 230 kcal a day more, enough to explain most of their weight gain at three months.

In other words, nicotine does not solve the reasons for a heavier body. It only masks hunger for as long as you keep using it, and it brings addiction and health risks with it.

Does vaping cause weight loss?

There is no good evidence that vaping makes people lose weight. A systematic review of e-cigarettes and body weight found mostly animal, lab and survey studies, none able to show that vaping causes weight loss in people, and concluded that much more research is needed.

A more recent review looked at adults who replaced some or all of their cigarettes with e-cigarettes. The studies were small, but the pattern was that people who only vaped tended to gain weight over time, and people who did both gained a little.

Studies in young people show that some of them use vapes to control their weight, especially those who are worried about their body. If that sounds like you or someone you love, please know that there are far kinder ways to manage weight, and that worry about weight is worth talking about.

What about vaping as a way to stop smoking? A large, regularly updated Cochrane review finds that regulated nicotine e-cigarettes help some people quit cigarettes, but that longer, larger trials are still needed to judge their safety fully. Whether vaping fits your quit plan at all is something to discuss with your doctor or stop-smoking service.

Nicotine patch for weight loss: an honest answer

A nicotine patch is a quit aid, not a weight-loss tool. It gives you a steady, lower dose of nicotine so that cravings for cigarettes are easier to handle while you break the habit.

The Cochrane review on weight after quitting found that people using nicotine replacement gained slightly less weight while they were using it, about half a kilo less on average. After a year the difference was too uncertain to be sure there was any lasting effect.

So a patch may soften the weight gain a little while you quit, but it will not make you lose weight. Using nicotine to suppress your appetite when you do not smoke would mean starting an addiction for a small and temporary effect.

Nicotine replacement and stop-smoking medicines are quit aids, not weight-loss aids; which one suits you, if any, is for your doctor or local stop-smoking service to decide. Obesity Foundation does not recommend or promote any medicine for weight loss; our focus is good food, appropriate exercise and walking. Facts about weight-loss medicines are on our obesity medication page.

How much weight do people gain after quitting smoking, and when does it stop?

On average, people gain about 4 to 5 kg in the first year after quitting, and most of that gain happens in the first three months. These figures come from a meta-analysis of 62 studies of people who managed to stay smoke-free.

The gain slows down after about six months. Between six and twelve months, the average rose only by a few hundred grams more.

Average weight change after quitting smoking (people who quit without treatment)
Time since quitting	Average weight change	What helps most at this stage
1 month	About +1.1 kg	Regular meals, water, short walks when a craving hits
2 months	About +2.3 kg	A plan for the moments you used to smoke
3 months	About +2.9 kg	Keep walking daily, watch portions of snacks
6 months	About +4.2 kg	Start gentle weight loss once you feel steady
12 months	About +4.7 kg	A full eating plan and more walking minutes

Source: averages from Aubin and colleagues in the BMJ. The range between people is very wide, so treat these numbers as a rough guide.

The spread is the most hopeful part of this research. A year after quitting, about 16 % of people had lost weight, 37 % had gained less than 5 kg, 34 % had gained 5 to 10 kg and 13 % had gained more than 10 kg.

The figures were similar for people who used quit aids and those who did not. They were also similar for people who were very worried about weight gain and those who were not.

Some people are more likely to gain more. A review names being younger than 55, smoking more than 25 cigarettes a day and having a lower income as risk factors. If one of these fits you, a plan for food and movement from day one is even more useful.

Why does quitting lead to weight gain?

Weight goes up after quitting because the body uses a little less energy, appetite returns and food often takes over the role cigarettes used to play. Usually it is a mix of these, not one single cause.

Energy use drops. Without nicotine, your body no longer burns that small extra amount each day. If you keep eating the same, the scale creeps up.
Appetite comes back. Nicotine kept hunger down. When it stops, many people feel hungrier for a while, and that is normal.
Food feels more rewarding. Research suggests that without nicotine, sweet and fatty snacks give a stronger sense of reward, so comfort food becomes more tempting.
Hands and mouth miss the habit. A cigarette kept your hands busy and gave your mouth something to do. Snacks are an easy replacement.
Food becomes the reward or the break. Many people used a cigarette to mark the end of a meal, a pause at work or a stressful moment. Without a new routine, food fills that gap.

Knowing these reasons helps, because each one has a practical answer. The sections below show how to deal with them one by one.

Is quitting worth the weight gain?

Yes, quitting is worth it, even if you gain weight. Large studies show that the health benefits of stopping smoking are far greater than the harm of the extra kilos most people gain.

A study of three large groups of American men and women followed people for many years after they quit. Compared with people who kept smoking, recent quitters had a clearly lower risk of dying from heart and blood vessel disease, whether they gained no weight, a little or a lot.

Depending on the weight change, that risk was about 30 % to 75 % lower than in people who kept smoking. The same pattern was seen for death from any cause.

There is one thing to watch. In the same study, the risk of type 2 diabetes went up for a few years after quitting, peaking five to seven years later and then falling again. That rise depended on the weight gain: in people who did not gain weight, the risk did not go up.

So the message is not “keep smoking to protect your weight”. The message is “quit, and keep the weight gain as small as you can”. If you already have high blood sugar, our page on insulin resistance explains what helps.

Mental health is another worry for many people. A Cochrane review found no sign that quitting harms mental health, and some evidence that anxiety, depression and stress improve a little after people stop.

For a wider view of how weight and smoking each affect your body, see our overview of the health risks of obesity.

Should you quit and lose weight at the same time?

For most people, it is best to quit smoking first and aim to keep their weight steady, then start losing weight once they feel safely smoke-free. Trying to do both at full strength at once is hard, and quitting is the change that brings the biggest health gain.

The Cochrane review on preventing weight gain after quitting supports this careful approach. It found no method with solid evidence of a clear, lasting effect on weight after quitting.

The review also found that general weight-control lessons without a personal plan did not reduce weight gain, and may even have lowered the chance of staying smoke-free. Personal support that included a plan and feedback reduced weight gain by about a kilo during the programme, though the long-term effect was unclear.

Exercise programmes made little difference at first, but after a year the people who took part weighed about 2 kg less on average. That evidence is limited, yet it fits with what we see in daily life: moving more helps.

The good news in the same review is that there was no strong evidence that sensible weight help makes quitting harder. So a gentle focus on food and walking while you quit is reasonable, as long as quitting stays the priority.

Talk to your doctor first. Before you set a quit date or change how you eat, talk to your doctor or a local stop-smoking service. This matters even more if you have diabetes, heart disease, high blood pressure or take medicines, so your doctor can check whether anything needs adjusting.

Help from a professional also makes quitting more likely to succeed. A Cochrane review found that combining quit medicines with behavioural support clearly raised success rates compared with usual care or brief advice. Our doctor visit checklist helps you prepare questions for that appointment.

If you want to lose weight after quitting and would like personal food advice, you can read about working with a nutritionist for weight loss.

Cravings after quitting: food that helps and what to keep within reach

Cravings after quitting come and go, so the trick is to have a plan ready for the moment one arrives. Food can help, as long as it is filling and low in calories rather than sweets and crisps.

Eat regular meals

Skipping meals makes everything harder. When you are already hungry, a craving for a cigarette and a craving for food feel almost the same, and you are more likely to grab whatever is close.

Three meals a day with protein, vegetables and wholegrains keep hunger calm. A free eating plan built around filling meals helps here; you can ask for it at the end of this page.

Hand-and-mouth swaps

Your hands and mouth are used to a cigarette many times a day. These swaps give them something to do, with few calories. Values are approximate, from the USDA food composition data.

Hand-and-mouth swaps after quitting smoking, with approximate calories
Swap	Portion	Approximate calories	Why it helps
Carrot sticks	100 g (one or two carrots)	About 40 kcal	Crunchy and slow to eat
Cucumber slices	100 g	About 15 kcal	Fresh taste, almost no calories
Celery sticks	100 g	About 15 kcal	Long and stick-shaped, keeps hands busy
Red pepper strips	100 g	About 25 kcal	Sweet without added sugar
Air-popped popcorn, plain	20 g (a small bowl)	About 75 kcal	Lots of pieces to pick up one by one
An apple, sliced	150 g	About 80 kcal	Takes time to chew, adds fibre

Other small helpers are a glass of water, a cup of tea or sugar-free chewing gum. Brushing your teeth after a meal also sends a clear “meal is over” signal.

For many more ideas with calories and protein, see our list of healthy snacks. If you notice you eat mainly when you feel low, tense or bored, our page on emotional eating goes deeper.

Your smoking moments and what to do instead

Most people smoked at the same moments every day. Planning a new action for each moment works better than willpower alone.

Common smoking moments, why the craving comes and a food or walking swap
Moment	Why the craving comes	Food or walking swap
After a meal	The cigarette marked the end of eating	Get up and take a 10-minute walk
With morning coffee	Coffee and smoking were linked for years	Change the place or cup, add a short stroll
A break at work	It was your excuse to step outside	Walk around the block or climb a few stairs
Stress or anger	Smoking felt like a way to calm down	Slow breathing, then a brisk few minutes outside
Boredom in the evening	Hands and mouth had nothing to do	Crunchy vegetables or a small bowl of plain popcorn
A drink with friends	Drinks and cigarettes often go together	Choose alcohol-free drinks for the first weeks

The coffee moment deserves a word of its own. Black coffee and tea have almost no calories, so you do not need to give them up; just break the link with the cigarette. Read more in coffee and tea for weight loss.

Alcohol lowers your guard against both cigarettes and snacks. Our page on alcohol and weight loss explains how to drink less without feeling left out.

Poor sleep and stress also make cravings stronger in the weeks after quitting. Our page on sleep, stress and mental health has practical ideas for both.

Walking and exercise when you quit

Walking is one of the most useful tools when you quit, because it eases cravings in the moment and helps you keep your weight steady in the months after. It is free, you can do it almost anywhere and you can start at your own level.

A meta-analysis of experiments with people who were temporarily not smoking found strong evidence that a short bout of physical activity reduces the urge to smoke. The effect also held for moderate activity, such as walking at a pace where you breathe a bit faster but can still talk.

So when a craving hits, stand up and go for a walk of five to ten minutes. In the studies, the urge to smoke was clearly weaker after a short bout of activity than after sitting still.

Over the weeks, regular walking also makes up for some of the energy your body no longer burns, and it helps with stress and sleep. Our page on walking for weight loss has a step-by-step plan for beginners, and explains how fast to walk.

Many people find that breathing gets easier in the months after they stop smoking, which makes walking more pleasant. If getting out of breath still holds you back, read our page on shortness of breath and obesity.

Once walking feels easy, walking with poles is a way to use your arms too. Read more about Nordic walking for weight loss. If you would like to add some strength work at home, our free workout videos start at the gentle Start level.

Quitting and walking are both easier with company. A friend who walks with you at your usual smoking times is worth a lot. You could also look at weight loss support groups, many of which walk together.

An 8-week plan to quit without gaining weight

This plan helps you stop smoking while keeping your weight as steady as possible, with one small food habit and a bit more walking each week. It is a general example, not personal advice.

Talk to your doctor or a stop-smoking service first. They can help you choose a quit date and quit aids, and check whether any of your medicines need adjusting. If walking is new for you, or you have heart, lung or joint problems, ask them how much walking is safe to start with.

An 8-week plan to quit smoking without gaining weight
Week	Walking	One food habit	Check-in
1 (preparation)	5 to 10 minutes a day, at any pace	Fill the fridge with ready-cut vegetables	Set a quit date with your doctor or quit service
2 (quit week)	A short walk after each main meal	Three regular meals, no skipping	Write down your smoking moments and your swaps
3	10 minutes, twice a day	Protein at every meal to stay full	Weigh yourself once this week
4	15 minutes, twice a day	Water or tea instead of sugary drinks	Which craving was hardest? Plan for it
5	20 minutes a day, plus short craving walks	A smaller plate for your evening meal	Weigh yourself once; aim for steady
6	25 minutes a day	Vegetables make up half of lunch and dinner	Check sleep and stress; ask for help if needed
7	30 minutes a day, in one go or split up	Plan snacks in advance rather than grabbing	Talk to your doctor or quit service about progress
8	30 minutes a day; try a Start workout video	Ask for a free eating plan to start losing weight	Smoke-free and steady? Then begin weight loss

If you slip and have a cigarette, it does not mean you have failed. A slip is a moment to learn from, not a reason to give up. Talk to your quit service, look at what triggered it and carry on with the plan.

If your weight goes up by a kilo or two, that is not a failure either. Stay smoke-free, keep walking and look at your portions. Our page on calorie counting can help if you want a clearer picture for a while.

After week 8, when you feel confident about staying smoke-free, you can move from “steady” to “losing”. Choose a calm, steady pace rather than a strict diet; our page on safe weight loss explains what that looks like.

Free help to lose weight with good food and walking after you quit

We help people lose weight and get healthier with good food, suitable exercise and walking. Quitting smoking and losing weight both take effort, and you do not have to do either alone. Everything we offer is free, and we never sell pills, patches or products.

A free eating plan with filling meals, so you can keep hunger calm while you quit and lose weight afterwards. Ask for your free eating plan.
Free workout videos in Start, Build and Strong levels, to move more at a level that suits your body. Watch the free workout videos.
A free video meeting (in English) to talk through your plan, your cravings or your worries about weight. Plan a free video meeting.
A free Club account to keep track of walks, meals and smoke-free days in one private place. Create your Obesity Foundation Club account.

For help with the quitting itself, your doctor or local stop-smoking service is the right place to go. We are here for the food, the walking and the weight.

Smoking and weight gain are both common, and neither says anything about your worth.

Stopping smoking is the best gift you can give your health. A few extra kilos are a problem you can solve, step by step, with good food and walking.

Frequently asked questions

Will the weight I gained after quitting smoking come off again?

It can, with the same steps that help anyone lose weight: filling meals, sensible portions and regular walking. Most of the gain happens in the first months after quitting and then slows down, so once you feel safely smoke-free you can work on losing it at a steady pace.

I gained weight after quitting. Should I start smoking again to lose it?

No. Large studies show that people who quit have a clearly lower risk of dying from heart disease than people who keep smoking, even when they gain more than 10 kg. Stay smoke-free and tackle the weight with food and walking instead.

Does nicotine gum or a nicotine pouch help you lose weight?

No. Any form of nicotine has the same small, temporary effect on appetite, and it keeps you dependent on nicotine. Nicotine gum is meant only as a short-term aid to stop smoking, ideally with advice from your doctor or a stop-smoking service.

Is it normal to feel much hungrier after quitting smoking?

Yes. Nicotine dulls appetite, so hunger often returns more strongly for a while after you stop, and food can feel more rewarding. Regular meals with protein and vegetables, water and short walks make this phase easier.

How soon after quitting can I start trying to lose weight?

The plan on this page suggests keeping your weight steady for about the first two months and starting to lose weight once quitting feels stable. There is no fixed rule, so agree on the timing with your doctor or stop-smoking service.

Can I quit smoking while I am already following a weight-loss plan?

Yes, but make quitting the priority and expect your weight loss to pause for a while. Keep your regular meals and daily walks, avoid a strict diet during the first weeks and tell your doctor about both changes.

Smoking and weight loss: does nicotine keep weight off, and how do you quit without gaining?