Weight gain after quitting vaping: what to expect
The best numbers come from people who quit cigarettes, and they vary widely. Here is what they do and don't tell you about a vape, with a snack swap plan and a weekly check-in.
本文为英文。
Weight gain after quitting vaping is a real worry, and the research only partly answers it. The best numbers we found come from people who quit cigarettes. In those studies, the average gain over a year was about 4.7 kg (around 10 pounds), the spread was wide, and some people lost weight. This guide walks through what those numbers do and don't tell you about a vape, and gives you a snack plan and a weekly check-in you can use now.
What the numbers say, and whose they are#
The most useful study we found is a 2012 meta-analysis in the BMJ. The authors pooled 62 studies of smokers who stayed off cigarettes for up to a year. For those who quit without treatment, the average gain was 1.12 kg at one month, 2.85 kg at three months, 4.23 kg at six months and 4.67 kg at 12 months.1 The 12-month figure has a 95% confidence interval of 3.96 to 5.38 kg, so the average is fairly tight. The people in it are not.
The authors estimated that at 12 months, 16% of quitters 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.1 Most of the gain came in the first three months.1 So the honest answer to whether you will gain weight is that some people gain a lot, some gain a little, and some lose weight.
Two limits matter here. These are cigarette quitters, not vapers. And the averages were similar across the medicines people used to quit, which means medication didn't obviously change the pattern. None of this tells you what your own body will do.
Why nicotine may matter, and where it gets murky#
Nicotine is the first thing people blame, and there's a basis for it. A 2021 review of 65 studies concluded that nicotine increases resting energy expenditure and physical-activity energy expenditure, in both smokers and non-smokers.2 In plain terms, nicotine seems to make the body burn a little more than it would without it.
The appetite part is less settled. The same review says nicotine may reduce appetite through effects on brain signals, but it also says the effect of nicotine on how much people actually eat remains unclear.2
There's a complication on the metabolism side too. An older review of cigarette smoking found that smokers and non-smokers had similar resting metabolic rates, and that the rate declined very little after quitting.3 If that holds, the metabolic change alone can't explain the whole gain. The research we found doesn't split the gain cleanly into metabolism, appetite and everyday routine, so anyone who gives you a neat percentage is guessing.
What we know about vapes (not much)#
We couldn't find a published study that follows weight after quitting vaping. Every controlled number above comes from cigarettes. That matters because nicotine from vapes varies a lot. The National Academies report says exposure to nicotine from e-cigarettes is highly variable, depends on the device, the liquid and how the device is operated, and can be comparable to cigarettes for experienced adult users.4
So a drop in nicotine after you quit may be bigger or smaller than it would be after quitting cigarettes, depending on how you used your vape. Treat any vaping-specific weight figure you see online as a guess unless it names a study you can read.
The snack swap and hunger plan#
This is the part you can use this week. Each row is a moment when the vape used to do a job, what is probably going on, and a swap that doesn't involve counting calories or cutting food. Pick the two or three that match your week, and try them for seven days before you judge them.
| Situation | What's probably going on | Swap to try |
|---|---|---|
| Mid-afternoon, hands restless, at your desk | The hand-to-mouth habit is still there, and food is the easiest thing within reach. | Keep something crunchy or chewy you like where the vape used to live: gum, carrot sticks or a sugar-free mint. |
| Just after a meal, still wanting the hit | The vape was the full stop at the end of a meal. Without it, the meal doesn't finish. | Brush your teeth or chew gum straight after eating, so the meal has a clear end. |
| Late evening, on the sofa | Wind-down time, often in the same spot where you used to vape. | Make a warm drink or a short walk your new end-of-day signal. Put the snack out of arm's reach instead of on the coffee table. |
| Stressed, or a bad night | Stress and cravings can both push you towards food, and the research on what drives it is thin. | Try a non-food reset first: a few minutes of slow breathing, or a short walk outside. If the urge is strong, run through a craving routine before you eat. |
| Out with friends, or a long meeting | Same hands, same habit, different room. | Before you go, decide the one thing you'll do with your hands, and bring it with you. |
A five-minute weekly check-in#
Once a week, sit down with your notes for five minutes and answer four questions. Keep the answers short.
- Weight: one reading, same scale, same time of day. Look at the trend over four weeks, not one day. If weighing makes you anxious, skip it and use the other three questions.
- Hardest hour: which hour of the day was hardest for cravings or snacking, and what was happening just before it.
- One swap: which swap from the table you used, and whether it worked. Drop the ones that didn't and try another.
- Anything else: has anything changed beyond weight, such as how you feel, how you sleep or your energy? If it has, that is a reason to talk to a doctor, not to try harder on your own.
The NHS describes nicotine withdrawal as strongest in the first week and, on average, lasting three to four weeks, though its page is written for people quitting smoking.5 If your appetite is still strong after that, the check-in will show it.
When to talk to a doctor#
If the weight worries you, if it is climbing fast, or if you have a health condition, talk to your doctor or pharmacist before you change how you eat or how much you move. A doctor can check whether anything else is going on, and talk you through options, including nicotine replacement and prescription medicines. For those, the doctor or pharmacist is the right person, not a guide.
Nothing in this guide is medical advice, and it doesn't set calorie or diet targets for anyone.
Where this fits in quitting#
The weight question is one part of a bigger picture. The vape withdrawal timeline covers the first weeks, when cravings are usually strongest. What happens to your body when you quit vaping covers the rest of the body side, and if you're still planning the whole quit, start with how to quit vaping.
The moments in that snack table are where ExHale earns its place. When a craving hits at your desk or on the sofa, the craving SOS gives your hands and head a job: box breathing, 4-7-8 breathing, quick minigames or a turn-based battle with Reddington, your pixel quit buddy. That is the craving routine the table suggests running before you eat. You log each puff and craving with one tap, so your weekly check-in starts from your Stats screen, not from memory.
Questions about weight gain after quitting vaping#
Will I gain weight after quitting vaping?
Some people do and some don't. The best study we found is on cigarettes: in a 2012 meta-analysis, smokers who quit without treatment gained about 4.7 kg on average over 12 months, but about 16% of them lost weight. We couldn't find a published study that tracks weight after quitting vaping, so treat that number as a rough guide, not a forecast for you.
Does nicotine make you burn more energy?
A 2021 review of 65 studies found that nicotine increases resting energy expenditure in both smokers and non-smokers. The effect on appetite is less clear, and the same review says the effect of nicotine on how much people eat remains unclear. A 1992 review found that resting metabolic rate barely declined after quitting smoking, so metabolism probably explains only part of the gain.
When does weight gain after quitting usually happen?
Most of the gain in the research comes in the first three months. In the 2012 meta-analysis of smokers who quit without treatment, the average gain was 1.12 kg at one month, 2.85 kg at three months and 4.67 kg at 12 months. Those are averages from cigarette quitters, so your timing could be different.
What can I do about snacking when I want to vape?
Work out the moment the snacking happens, then give your hands and mouth a different job. Keep something crunchy or chewy you like where the vape used to be, make a warm drink or a short walk your end-of-day signal, and use a craving SOS when the urge hits. The guide's table lists five common situations and a swap for each.
When should I talk to a doctor about weight gain after quitting vaping?
Talk to your doctor or pharmacist if the weight worries you, if it is rising fast, or if you have a health condition. A doctor can check whether anything else is going on and talk you through options, including nicotine replacement and prescription medicines. This guide is not medical advice.
References#
- Aubin HJ, Farley A, Lycett D, et al. Weight gain in smokers after quitting cigarettes: meta-analysis. BMJ 2012;345:e4439. pubmed.ncbi.nlm.nih.gov/22782848/
- Schwartz A, Bellissimo N. Nicotine and energy balance: a review examining the effect of nicotine on hormonal appetite regulation and energy expenditure. Appetite 2021;164:105260. pubmed.ncbi.nlm.nih.gov/33848592/
- Perkins KA. Metabolic effects of cigarette smoking. J Appl Physiol 1992;72(2):401-409. pubmed.ncbi.nlm.nih.gov/1559911/
- National Academies of Sciences, Engineering, and Medicine. Public Health Consequences of E-Cigarettes (2018), conclusions and highlights. nap.nationalacademies.org/resource/24952/012318ecigaretteHighlights.pdf
- NHS. Managing nicotine withdrawal symptoms. www.nhs.uk/better-health/quit-smoking/staying-smoke-free/managing-nicotine-withdrawal-symptoms
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