Is popcorn good for weight loss? Popcorn, chips, crisps and salty snacks compared, portion by portion

Is popcorn good for weight loss? The short answer

Yes: plain, air-popped popcorn is one of the better crunchy snacks for weight loss, as long as you keep it plain and measure the portion. It is a whole grain with a lot of air in it, so you get a full bowl for modest energy.

About 30 g of air-popped popcorn gives roughly 115 kcal, 1.3 g of fat and 4.5 g of fibre. The same weight of plain potato chips gives about 160 kcal and 10 g of fat, with less than 1 g of fibre.

The weight is the same, but the volume is not. In one study, 27 g of light popcorn filled about six cups, while 28 g of potato chips filled about one cup.

Air itself seems to help. In a lab test with 28 adults, cheese puffs puffed up with more air led people to eat a bigger bowlful but about 21 % fewer calories, roughly 70 kcal less, and they felt just as full afterwards.

Popcorn versus chips in a fullness study

That study, in the Nutrition Journal, tested four options on 35 adults of normal weight, on different days: water only, one cup of popcorn, six cups of light microwave popcorn (100 kcal) or one cup of potato chips (150 kcal). Half an hour later, they could eat as much pasta with cheese as they liked.

After six cups of popcorn, people rated their hunger lower and their satisfaction higher than after the chips. They then ate about 640 kcal at the meal, against about 655 kcal after the chips.

Snack and meal together came to roughly 740 kcal after popcorn and 800 kcal after chips. That is a small gap from one test meal, in people without overweight. The study was paid for by a company that makes popcorn and one author worked there, so read it as a hint, not proof.

Where popcorn stops being light

Popcorn turns into a heavy snack when it is cooked in a lot of oil, coated in butter, cheese powder or caramel, or bought in a size meant for three people. Then it can easily pass a plate of chips.

Chips, crisps and other salty snacks are not off limits either. The honest problem is that they are dense, salty and sold in bags that make it hard to stop, so the portion decides almost everything.

Talk to your doctor first if you have high blood pressure, heart or kidney disease, diabetes or reflux, or if you take medicines. The advice on this page is general, and all calorie, fat and fibre values are approximate.

Popcorn compared: air-popped, oil-popped, microwave and toppings

Air-popped popcorn is the lightest kind, and every step towards more oil, butter flavour, cheese or sugar adds energy. The table compares the same 30 g portion so you can see the difference in one glance.

We calculated every value from the USDA food tables (SR Legacy). Products differ from shop to shop, so check the label of the one you buy and treat our numbers as a guide.

The surprise for many people is the caramel row. It does not look high in calories per 30 g, yet more than half of it is sugar, and sweet coated popcorn is very easy to keep eating.

Microwave bags are not all the same. A light or low-fat bag stays close to air-popped, while a regular or butter-flavour bag moves towards chips. The words on the front tell you less than the kcal per 100 g on the back.

Toppings: where the extra calories hide

Popcorn soaks up fat quickly, so a small pour changes a lot. A tablespoon of melted butter almost doubles a 30 g bowl of air-popped popcorn.

Ghee and mustard oil are sometimes seen as lighter or more natural. Gram for gram, ghee has about the same energy as butter fat, and mustard oil the same as olive or sunflower oil: all are close to 900 kcal per 100 g.

Spices are the cheapest way to make plain popcorn taste of something. A small spray or a teaspoon of oil helps them stick, and that is all the fat you need.

Is popcorn a whole grain?

Yes. Popcorn is the whole corn kernel, bran and germ included, so it counts as a whole grain and gives fibre that most refined snacks lack.

A large US survey found that people who ate popcorn had about two and a half times more whole grains (2.5 against 0.7 servings a day) and about 22 % more fibre than people who did not. This kind of survey shows a link, not a cause, and one of its authors also co-wrote the company-funded fullness study above.

Healthy chips for weight loss? Potato, tortilla, baked, pita, pretzels and more

There is no truly light chip: most crunchy savoury snacks land between about 110 and 160 kcal per 30 g, and the “baked” versions save only a little. Pretzels are lowest in fat, while plain potato and corn chips are highest.

What are the healthiest chips for weight loss?

The healthiest chips for weight loss are the ones you can stop after one measured portion. On the numbers, baked tortilla chips and pretzels are lowest in fat, while air-popped popcorn gives the most fibre and the biggest bowl for its energy.

Look at the gap between plain and baked potato chips: about 160 against 141 kcal per 30 g, a saving of roughly 12 %. Baked tortilla chips save about 5 % against plain ones.

If a “light” label makes you eat a second handful, the saving has gone. A 30 g portion of the ordinary snack you love may serve you better than 60 g of a version you do not enjoy.

Are pretzels good for weight loss?

Pretzels are a fair choice when you count them, because they are low in fat and lower in energy than most chips. They are made from white flour, though, so they give little fibre and do not fill you up for long.

Many hard pretzels are also covered in coarse salt. If you watch your salt, choose an unsalted kind and read the label, because our food table has no salt values.

What about salted nuts and seeds?

Dry-roasted peanuts and sunflower seeds carry about 175 kcal per 30 g, more than any chip in the table. Yet they bring protein and fibre, and many people feel fuller after a small handful than after the same calories in chips.

Nuts deserve their own page, and they have one: our guide to salted and roasted nuts explains portions and salt. The simple swap of crisps for plain popcorn already sits on our healthy snacks swap table.

Why a bag of chips empties so fast

A bag of chips empties fast because the snack is dense, salty and crunchy, and because a bigger pack quietly tells you that a bigger amount is normal. Willpower has little to do with it.

The bag-size study

In a lab study published in the journal Appetite, 60 adults came to a lab on five afternoons. Each time they got an opaque, unlabelled bag of potato chips, in one of five sizes from 28 g to 170 g, and could eat as much as they liked straight from the bag.

The bigger the bag, the more chips people ate, men and women alike. They did not make up for it at dinner three hours later: with the largest bag, snack and dinner together came to about 143 kcal more than with the smallest.

Do small packs help?

A second study tested this at home. For one week, 59 people received their snacks in 100-kcal packs, and for another week in standard packs, with a diary to note what they ate.

With the small packs, people ate about 187 g fewer snacks a week. The gap between the groups showed in the first week but not in the second, and diaries are not perfect, so it is a useful sign rather than a firm rule.

Curiously, people who had the small packs first also ate fewer snacks from the large packs the week after. Seeing a real portion once seemed to change their sense of how much is enough.

Crunch, salt and fat

Chips are designed to be pleasant from the first bite to the last: crunchy, salty, a bit fatty and gone in the mouth quickly. You chew little, so many grams pass before your stomach has a say.

Most packaged chips belong to the group of highly processed foods, and our page on the food environment explains why such foods make it easy to eat more. Fried food in general is covered in the foods to limit list.

Potatoes themselves are not the problem. A boiled or baked potato is filling and fairly light, and it brings fibre when you eat the skin; the frying and the bag are what change it.

How to make popcorn for weight loss at home

Home-made popcorn is the easiest way to get a light, cheap crunchy snack: all you need is kernels, a pan with a lid or a microwave bowl, and spices. You decide how much oil and salt goes in.

In a pan

1. Measure 20 to 30 g of kernels per person, about two to three level tablespoons.
2. Heat a large pan with a lid, dry or with 1 teaspoon of oil.
3. Add the kernels, close the lid and shake the pan now and then over medium heat.
4. Take it off the heat when the popping slows to a few seconds between pops.
5. Tip it into a bowl at once and season while it is warm.

In the microwave

Put the kernels in a large microwave-safe glass bowl with a plate or a vented lid on top. Heat in short bursts and stop as soon as the popping slows, because burnt kernels taste bitter.

This gives you the same light result as a ready-made light microwave bag, without the added fat. Never leave a microwave unattended while popcorn is in it.

Seasoning without butter or sugar

• Savoury: smoked paprika, chilli flakes, cumin, curry powder, garlic powder or dried herbs.
• Cheesy: one tablespoon of finely grated parmesan, about 21 kcal, for a whole bowl.
• Warm and sweet: cinnamon with a pinch of cocoa powder, no sugar.
• Tangy: a squeeze of lime with a little chilli, or a sprinkle of chaat masala if you like it.

Plain kernels cost little per bowl, so popcorn suits a tight budget. Store them in a closed jar, and you always have a light snack in the cupboard.

Six bag rules: portion, plate and pace

You can keep chips and popcorn in your week and still lose weight when the bag stops deciding the amount. These six rules take a few seconds each and need no willpower in the moment.

1. Bowl, then close. Pour one portion into a small bowl, close the bag and put it back in the cupboard before you sit down.
2. Buy small. Single bags cost more per gram, but they end on their own; a 200 g family bag of plain chips holds about 1,065 kcal.
3. Read the grams. Compare kcal per 100 g, not per “serving”, as our guide to reading labels per 100 g explains.
4. Weigh once. Weigh 30 g of chips into your usual bowl one time, so you know what a portion looks like.
5. Add something filling. Pair a small portion with crunchy vegetables and a light dip, such as the fresh tomato salsa in our recipes.
6. Sit and taste. Eat at a table, slowly, without a screen in front of you if you can.

For more on how to judge portions of any food, see our page on portion control. Treat these rules as a routine, not a test: if the bag wins one evening, simply use the bowl again the next day.

Namkeen, chanachur, nimko and muri: salty snacks around the world

Fried savoury mixes such as namkeen, bhujia, chanachur and nimko are as dense as chips or denser, so the same bowl-and-portion rules apply to them. In many homes they are served with tea, at iftar or for guests, which makes small portions even more useful.

Most of these mixes are not in the USDA food tables, so we do not give numbers for them. As a rule they are made from gram flour, lentils, nuts or rice, fried in oil and salted, which puts them close to the chips at the top of our table.

Puffed rice (muri) is a lighter base: plain puffed rice has about 121 kcal per 30 g, based on a USDA row for fortified puffed-rice cereal. Jhal muri becomes heavier with every spoon of mustard oil and every handful of fried peanuts or sev.

Lighter swaps that keep the flavour

• Mix half and half: stretch fried namkeen with puffed rice, chopped onion, tomato, cucumber and lime.
• Roast instead of fry: roasted chana and makhana are on our Indian diet page.
• Plate it for guests: put a small bowl on the table and keep the packet in the kitchen.
• Season popcorn the local way: chaat masala, chilli or a little turmeric make popcorn taste familiar.

During Ramadan, fried snacks at iftar can add up fast after a day of fasting. Our Ramadan weight loss guide shows how to keep the table festive with fewer of them.

Some countries are also cleaning up how these snacks are made. Bangladesh, for example, has set a limit on industrial trans fat in foods.

Evening, TV and stress: when the bag comes out

For most people, chips and popcorn are evening foods, eaten during a film or after a hard day. That is exactly when a plan made earlier works better than a decision made on the sofa.

Decide at dinner whether tonight is a popcorn night, and if so, make one bowl before the film starts. Put the kernels or the bag away before you press play.

The calories eaten on top of a full day are the main issue with late snacks, which our page on eating late at night explains. If you reach for the bag when you feel stressed, sad or bored, the tools on our emotional eating page can help.

Keep your hands busy in other ways too: a cup of tea, a puzzle, a phone call or folding laundry while you watch. And when you notice the bag has gone, note it without blame; it tells you which evenings need a better plan.

Salt, blood pressure, diabetes and reflux: who should be careful

Most adults can fit a measured portion of popcorn or chips into a weight-loss plan, but some health conditions call for extra care with salt, starch or fat. Ask your doctor or dietitian what fits you.

• High blood pressure or heart disease: salted snacks are a quiet salt source. Choose unsalted popcorn and see the hidden salt list for where else it hides.
• Diabetes or raised blood sugar: popcorn is mostly starch, about 23 g of carbohydrate per 30 g of air-popped popcorn. Count it like other carbs and read our page on insulin resistance.
• Kidney disease: salt and some snack ingredients may need limits that only your kidney team can set.
• Reflux: fatty, spicy chips can bring on heartburn; see the swaps on our acid reflux page.

The food table we use has no salt values, so we cannot give salt per snack. Read the label: in many countries it shows salt or sodium per 100 g, and comparing two packs takes seconds.

A 4-week crunchy-snack plan for weight loss

Talk to your doctor first before you change what you eat, especially if you live with diabetes, high blood pressure or kidney disease. This plan keeps crunchy snacks in your life and simply makes them lighter and smaller, one step a week.

Week 1 is only about seeing your pattern. Many people find that most of their crunchy snacks fall on two or three evenings, which tells you where to focus.

The walk in week 4 is there for a reason: it puts some distance between you and the kitchen and adds movement to your day. Our guide to walking for weight loss starts with a few gentle minutes.

For other snack ideas beyond the crunchy ones, from yogurt to fruit, keep our list of healthy snacks close.

Free help to lose weight with good food and walking

At Obesity Foundation we help people lose weight and get healthier with good food, suitable exercise and walking. A lighter snack habit is a good start, and every kind of help we offer is free.

• Your own eating plan, with snacks you enjoy in portions that fit your day. Ask for your free eating plan.
• Exercise videos at the Start, Build and Strong levels, to move more at your own pace. Get the free workout videos.
• A free video meeting (in English) to talk through evening snacking and your routine, without judgement. Book a free video meeting.
• A Club account to note your snacks, walks and progress at no cost. Join the Obesity Foundation Club.

Tonight, if you feel like something crunchy, pour one bowl and close the bag. That small habit is where lighter snacking starts.