Snacks for Prediabetes: A UK Supermarket Guide

Do you need a snack?

Worth asking before anything else.

Some people get properly hungry between meals — a real, physical thing. Others reach for a snack because they're bored, tired, stressed, or because the biscuits happen to be within arm's reach. All of that is normal.

There's no rule that says snacking has to happen. The British Dietetic Association points out that snacks can absolutely be part of a healthy diet, but the reasons people snack vary hugely from person to person. Diabetes UK suggests something similar — pause and check whether you're genuinely hungry, and let snacks fit around your overall diet rather than treating them as compulsory.

So the first useful question isn't “what should I eat?” It's:

Am I actually hungry?

And if the answer's yes, then:

What am I getting out of this snack?

What to look for in a snack

There's no strict formula here.

But a good snack is often one that adds something — a bit of fibre, some fruit or veg, protein, nuts or seeds, dairy or a dairy alternative — rather than just topping up sugar, saturated fat, salt or calories without much else going on.

Diabetes UK's 2026 prediabetes guidance points to fruit, unsalted nuts and seeds, and yoghurt as solid everyday choices. NICE also recommends leaning into wholegrains, vegetables and other fibre-rich foods as part of reducing type 2 diabetes risk.

None of this is about building the “perfect” snack. It's just about the snack pulling a little weight nutritionally, where it reasonably can.

Fruit is still very much on the table

Fruit might be the simplest snack in the whole supermarket.

Diabetes UK is direct about this: you don't need to avoid bananas, grapes or mango just because they contain natural sugars. Fruit brings fibre, vitamins and minerals, and counts towards your five-a-day like anything else.

So an apple, a satsuma, a pear, a handful of berries or a banana are all perfectly ordinary things to reach for.

Portion still matters, though

Fruit does contain carbohydrate, so it's worth thinking about how much you're having — Diabetes UK uses a handful of grapes as an example portion, rather than working through an entire bunch without really noticing.

That's not a reason to be wary of fruit. It's just another reminder that what you eat and how much you eat are genuinely two different questions.

Dried fruit — a slightly different case

Dried fruit still counts towards your fruit intake, but it's a lot more concentrated than the fresh version, so the portion is smaller than you might expect — NHS guidance puts it at around 30g, roughly a heaped tablespoon of raisins, currants or sultanas.

There's also a dental reason to treat it a bit differently. Because it's sticky and tends to cling to your teeth, the NHS recommends having dried fruit with a meal rather than as a standalone snack between meals, to help protect against tooth decay.

So for snacking specifically, fresh fruit is usually the easier choice.

Nuts and seeds: genuinely useful, just watch the handful

Nuts can look intimidating on a label — that fat number tends to jump out. But that doesn't make them a poor choice.

Diabetes UK's current prediabetes guidance includes unsalted nuts as a snack option, and calls out nuts and seeds as a source of healthier fats. The NHS agrees — unsalted nuts, useful snack, good source of fibre.

The real distinction in the supermarket is usually between:

plain or unsalted nuts

and

salted, honey-roasted, chocolate-coated or heavily flavoured nuts — once the coatings go on, the sugar, salt and overall picture can shift quite a bit.

And the portion, again

Nuts are nutrient-dense, but they're also energy-dense, so a small handful is a very different thing to slowly working through a large sharing bag in front of the telly.

The BDA suggests a small handful of mixed nuts as a snack-sized portion — a useful mental benchmark.

And nut butter

A spoonful of nut butter can turn a fairly plain snack into something that actually feels like it'll keep you going — stirred into porridge, spread on toast, or served alongside apple slices for dipping.

The tricky part is that “nut butter” covers a surprising amount of ground on the shelf these days.

Some jars are exactly what you'd hope — just peanuts, maybe a pinch of salt. Others have wandered further from that, with added sugar, palm oil or sweeteners mixed in.

So it's worth a quick glance at the ingredients before it goes in the trolley — ideally it's a short list, with peanuts, almonds or cashews doing most of the talking.

The BDA suggests apple slices with nut butter as one easy pairing — a good reminder that it doesn't need to be complicated.

Yoghurt: worth a proper look, not just the front of the pot

Yoghurt can be another good one to have in the fridge.

Diabetes UK's 2026 prediabetes guidance points to unsweetened natural or Greek yoghurt, topped with fruit, nuts or seeds if you fancy it.

But the yoghurt aisle itself is enormous — natural, Greek, Greek-style, fruit, split-pot, high-protein, flavoured, dessert-style — and they can differ a lot nutritionally.

So it's worth looking past phrases like “high protein” or “0% fat” and checking:

• sugars
• protein
• saturated fat
• ingredients
• portion size

And it's worth remembering that some of the sugar on a yoghurt's label is simply lactose — the sugar naturally found in milk — rather than anything added.

“High protein” isn't the whole verdict

Protein bars, protein puddings, protein yoghurts — they're everywhere now, and protein itself is genuinely useful in a balanced diet.

But “high protein” is only telling you one thing.

It doesn't say whether something is high or low in sugar, saturated fat or salt, whether it's a useful source of fibre, or whether the portion is a sensible one for you.

So it's worth treating “high protein” as one data point rather than a green light on its own.

The NHS's advice here is simple — compare similar products using the full nutrition panel, not just the headline claim on the front.

Protein and cereal bars: worth turning over

Bars are probably the easiest thing in the supermarket to assume is automatically healthy, just from the ingredients list on the front — oats, nuts, seeds, protein, wholegrains, fruit.

It reads well.

But that doesn't tell you what's actually in the finished bar.

Diabetes UK looked into a range of commonly sold cereal bars and found many contained added sugars, with some also carrying a fair amount of saturated fat.

They also make a fair point worth remembering: formulations change over time, so it's worth checking the current label rather than relying on a comparison you did a while ago.

So when you're weighing up bars, it's worth glancing at:

• total carbohydrate
• sugars
• fibre
• saturated fat
• salt
• ingredients
• portion size

And “natural” doesn't automatically mean low sugar

Honey, syrups and fruit juice concentrates all count as free sugars, even when they sound wholesome.

A bar can have a lovely-looking ingredients list and still be one you'd rather have occasionally than every day.

That doesn't make it forbidden — it just means the front of the wrapper isn't quite the whole story.

Crisps: less about “allowed”, more about how often

Prediabetes doesn't mean crisps vanish from your life.

But they're a good example of where frequency, portion and comparison actually matter more than a yes/no answer.

Diabetes UK's guidance suggests reaching for fruit, nuts, seeds and yoghurt more often, and having things like crisps, biscuits, cakes, sweets and chocolate a little less often.

So instead of asking “am I allowed crisps?”, it might be more useful to ask:

How often am I buying them, what size packet am I actually eating, and how does this one compare with another?

Worth a look at salt, saturated fat, calories per portion and packet size — a small individual bag is a genuinely different thing to slowly working through a large sharing bag.

Is popcorn actually better than crisps?

Sometimes — but “popcorn” isn't one single product.

Plain popcorn is a solid, straightforward option, and both Diabetes UK and the BDA include it among their easy snack suggestions.

But supermarket popcorn also comes in sugar, caramel, chocolate, butter-flavoured and cheese-flavoured versions, so it's not automatically the healthier choice just because it's popcorn.

Worth comparing the actual packets — a lightly seasoned popcorn and a heavily caramel-coated one aren't really the same food.

What about rice cakes?

Rice cakes show up in a lot of “healthy snack” sections, but on their own, the name doesn't tell you much either.

The BDA suggests rice cakes with hummus or soft cheese, which is a nice illustration of a bigger point — it's often the combination that matters.

A plain rice cake with hummus, or with nut butter, or with cottage cheese, is a different snack to a plain rice cake by itself, and different again to one coated in chocolate.

Hummus and vegetable sticks

The snack aisle doesn't have to mean packaged bars and crisps.

Carrot, cucumber or pepper sticks with hummus bring vegetables, fibre and a bit of protein to the table, and both Diabetes UK and the BDA list this combination among their suggestions.

Even here, it's worth comparing products — different hummus brands and varieties can vary quite a bit in salt, oil, saturated fat and flavourings.

Not “hummus is good”, more “look at the actual tub you're buying.”

Crackers and oatcakes: check fibre and salt

Crackers pair well with things like hummus or cheese, and NHS fibre guidance mentions rye crackers and oatcakes as useful options, particularly when paired with something like hummus.

But crackers vary a lot — worth comparing fibre, salt, saturated fat and portion size, since a wholegrain or rye cracker and a heavily flavoured one can look quite different on the label.

And chocolate

You don't need to pretend chocolate doesn't exist, and prediabetes doesn't mean it's off the table permanently.

Diabetes UK's guidance is explicit that there's no food you can't eat — it's about choosing healthier options more often.

The BDA describes chocolate, sweets and crisps as foods that fit fine occasionally, in smaller amounts, within the overall balance of your diet.

So the more useful questions become:

• how often am I having it?
• how big is the portion?
• is this an individual bar or a sharing pack?
• what else does the week look like?

Sometimes a smaller portion of the chocolate you actually love beats a “healthy” substitute you don't really want — especially if you end up eating both anyway.

This isn't about perfection.

It's about a bit of perspective.

You don't need special “diabetic” snacks

No need to go looking for a specialist aisle.

Diabetes UK doesn't recommend foods marketed as “diabetic” — they don't offer any real nutritional advantage over a normal balanced diet, and can still be high in fat and calories.

For prediabetes, most useful snacks are just ordinary supermarket food:

• fresh fruit
• unsalted nuts
• seeds
• natural yoghurt
• vegetable sticks
• hummus
• wholegrain crackers
• oatcakes
• plain popcorn
• boiled eggs

Nothing exotic, and nothing that needs its own expensive label.

Fibre matters at snack time too

UK adults are generally advised to aim for around 30g of fibre a day, and current NHS guidance suggests most of us are actually getting closer to 20g — so snacks can be a genuinely easy place to close some of that gap.

Fruit, vegetables, nuts, seeds, wholegrain crackers, oatcakes, hummus, beans or roasted chickpeas can all help.

A single snack doesn't need to be a fibre powerhouse on its own — it's the contribution across the whole day that counts.

NICE's prevention guidance points the same way, recommending more wholegrains, vegetables and fibre-rich foods generally.

Sugar isn't the only number worth checking

Sugar matters, but it's not the whole picture.

One snack might show more total sugar simply because it contains milk or fruit.

Another might have less sugar but be higher in saturated fat or salt, with barely any fibre.

Looking at just one number can leave you with an incomplete picture.

Current NHS labelling guidance recommends checking fat, saturated fat, carbohydrate, sugars, protein, salt and — where it's listed — fibre. Our guide to how to read UK food labels goes through each of those, and the beginner's guide to supermarket shopping puts them in the context of a whole shop.

This is usually shown per 100g or 100ml, sometimes with a per-portion figure alongside, which makes comparing similar snacks a lot easier.

Let the traffic lights do some of the work

Most UK supermarket products carry red, amber and green front-of-pack labels showing whether fat, saturated fat, sugars and salt are relatively high, medium or low.

Green means low, amber means medium, red means high.

The NHS's advice is simply to compare similar products, aiming for more greens and ambers where you reasonably can.

A red doesn't mean “never eat this.”

It's just information about that one nutrient, in that one food, useful for comparing choices — three bags of popcorn or three protein bars can look surprisingly different once the labels are sitting side by side.

Watch out for the manufacturer's idea of a portion

This one catches people out a lot with snacks specifically.

A nutrition panel might show figures “per serving” — but the manufacturer's serving isn't always the amount you'd actually eat.

The NHS makes this point directly.

It comes up especially with:

• nuts
• crisps
• popcorn
• chocolate
• crackers
• sharing bags
• multipacks
• dried fruit

Worth a quick check:

Is this per 100g, per serving, per half-packet, per bar — and is that roughly what I'm going to eat?

A few more useful questions to ask instead

Instead of:

“Are nuts good for prediabetes?”

try:

“Are these plain, unsalted, and what portion am I likely to actually eat?”

Instead of:

“Is popcorn healthy?”

try:

“How much sugar, saturated fat and salt does this particular bag have?”

Instead of:

“Is this protein bar good for me?”

try:

“Besides the protein, what do the sugars, fibre, saturated fat and portion size look like?”

Instead of:

“Can I have chocolate?”

try:

“How often am I having it, and would a smaller amount of something I actually enjoy work better?”

Instead of:

“Are rice cakes good?”

try:

“What am I having with them, and what's in the flavoured version?”

And maybe the most useful question of all:

Do I need a snack right now?

Sometimes yes, sometimes no — both completely normal.

The snack cupboard doesn't need to be perfect

You don't need to empty the cupboard and start again overnight.

Diabetes UK's prediabetes guidance actually encourages picking one or two changes you can realistically keep up, rather than trying to overhaul everything at once.

That might just mean:

• swapping salted nuts for unsalted
• buying individual crisp packets instead of a sharing bag
• comparing two yoghurts before choosing
• keeping fruit somewhere you'll actually see it
• trying vegetable sticks with hummus
• going for plain popcorn instead of the caramel version
• checking the label on the protein bar you already buy

One small change that sticks tends to matter more than a perfect shopping basket that only lasts three days.

PrediabetesBasket looks at the whole shop, not one snack

This is really the whole idea behind PrediabetesBasket — it doesn't judge your shop on a single item.

One packet of crisps doesn't make a basket “bad.”

One bag of unsalted nuts doesn't make it “good.”

Your shop is a mix of everything — what you buy regularly, what you buy occasionally, portion sizes, carbohydrate sources, fibre, fruit and veg, protein, saturated fat, salt, drinks, snacks, treats — and, just as importantly, the things you actually enjoy eating.

PrediabetesBasket looks at eligible online supermarket receipts and order confirmations from Tesco, Sainsbury’s, Asda and Ocado, and gives you simple, educational feedback on your real shop — not to criticise what's in it, but to highlight what's already going well, what might be worth a second look, and where a realistic swap could fit in.

Because improving your shop doesn't mean giving up everything you like.

Sometimes it just starts with understanding what's actually in the basket.