If you are worried about putting on weight when you stop smoking, you are not alone. It is one of the most common reasons people give for delaying a quit attempt. But the numbers are usually smaller than people fear, the gain can be limited, and the health benefits of quitting are far greater than the risks of a few extra kilograms.
Do you gain weight when you quit smoking?
Many people do, but not everyone. A large analysis of 62 studies published in the BMJ found that people who quit without medication gained an average of 4 to 5 kg after 12 months, with most of the gain in the first three months. The range was wide: around one in six people lost weight, while a smaller group gained more than 10 kg.
Why quitting can lead to weight gain
- Your metabolism slows slightly. Nicotine raises the number of calories your body burns at rest. Without it, you burn roughly 200 fewer calories a day.
- Your appetite returns. Nicotine suppresses appetite. Once it is gone, you feel hungry more often, and food tastes and smells better too.
- Hand to mouth habits. Snacking can quietly replace the routine of smoking, especially at old trigger times.
- Cravings feel like hunger. Low blood sugar and nicotine cravings can feel similar, so it is easy to eat when what you actually feel is a craving.
Is the weight gain worth it?
Yes, without question. You would need to gain a very large amount of weight to cancel out the health benefits of stopping smoking. Within a year of quitting your risk of heart disease is around half that of a smoker, and your lungs, circulation and cancer risk keep improving for years. See the full health recovery timeline.
Focus on quitting first. If you gain a little weight in the early months, you can address it once you feel secure in your quit. Going back to smoking to control weight is never a healthy trade.
Seven ways to limit weight gain
Use stop smoking aids
NRT and varenicline can reduce weight gain in the early months while you build new habits.
Plan your snacks
Keep fruit, vegetables, nuts or sugar-free gum ready for the moments you used to smoke.
Eat regular meals
Steady meals stop blood sugar dips that make both hunger and cravings worse.
Drink water first
A large glass of cold water often settles what feels like hunger and occupies your hands.
Move every day
A brisk ten-minute walk burns calories and has been shown to reduce cravings in the moment.
Watch the drinks
Alcohol and sugary drinks add calories and weaken your resolve at the same time.
Sleep well
Poor sleep increases appetite. Protect your sleep, especially in the first weeks.
Is it a craving or hunger?
This is worth learning to spot. A nicotine craving comes on suddenly, feels urgent and fades within a few minutes. Hunger builds slowly and does not go away until you eat. If you are unsure, wait five minutes and drink some water. If the feeling has passed, it was a craving. Our guide to how long cravings last explains why this works.
When to get extra help
If you are gaining weight quickly, or you have a health condition such as diabetes, speak to your GP or a stop smoking adviser. They can help you choose the right stop smoking aid and plan your diet alongside your quit. For the full quit plan, read our step-by-step guide to quitting smoking.
Frequently Asked Questions
How much weight do you gain after quitting smoking?
On average around 4 to 5 kg in the first year, mostly in the first three months. Some people gain nothing and some lose weight.
Does the weight gain go away?
Weight gain usually levels off after the first year. With regular activity and sensible eating, many people return to their previous weight over time.
Why am I so hungry after quitting smoking?
Nicotine suppresses appetite and speeds up metabolism slightly. When you stop, your appetite returns to normal and food tastes better, so it is common to feel hungrier for the first few weeks.
Can NRT stop weight gain?
It can reduce it. Nicotine replacement therapy and varenicline have both been shown to limit weight gain while you use them.
This article is general information, not medical advice. Nicotine replacement and stop smoking services can significantly improve your chances of quitting. In the UK, free support is available through the NHS. Speak to your GP or pharmacist about what's right for you.
