How to snack when you have diabetes

How to snack when you have diabetes

Everyone needs to snack sometimes. But if you have diabetes, it's important to choose something that won't have a big effect on your blood sugar. We explore the best snacks for those with type 1 and type 2 diabetes and how to avoid hypos.

At mealtimes, we can't always plan exactly how much food we need until the next meal. And if you have diabetes, it can be even trickier. But the aim of good diabetic control is to keep your sugar levels steady, so the ideal snack will satisfy your hunger but be low in fat and sugar. 

Fruit, biscuits, or cereal bars are useful, portable snacks. Always carry glucose tablets or gel or a non-diet soft drink too, in case of a hypo.

Snacking with type 1 diabetes


Like anyone, if you have type 1 diabetes you might get hungry between meals. Low blood sugar is not the only cause of hunger, although it can trigger it.

If you take insulin twice a day then you are fairly likely to need to snack between meals to stop your blood glucose levels from falling too low (a hypo). But if you take insulin with each meal then you won't usually need to snack. Your dietician will be able to advise you.


You might particularly need to snack before and/or after physical activity. If you are on insulin and you are about to be very active then it is usually best to snack before you start, particularly if your blood glucose is already low in your range. If you are active for a while, like a match, you may need an additional snack part-way through. After you have finished being active, you will carry on using extra glucose for a while as you replace your stored 'rapidly accessible energy'. You may need additional carbohydrate at your next meal to compensate for this.

When snacks cause problems

It's easy to accidentally overcompensate if you have type 1 diabetes. Take three-year-old Mia* who was diagnosed with the condition. Her mum, Jenny, also had type 1 diabetes, and a history of having hypos at night which frightened her.

Whenever Mia came to the diabetes clinic, her blood tests suggested that her control was very poor. The dietician spent some time with Mia and her mum and discovered that Mia's chosen snack was a mini MarsĀ® bar. Because her Mum worried about night-time hypos, Mia always had one or two of these beside her bed. She liked them so much that she would eat them each night, and would often request extra during the day.

But even a small MarsĀ® bar is a big snack for a little girl, and not something she needed during the night if she wasn't having hypos. Mia wasn't very pleased at first but with reward and praise she was 'weaned' off her late-night snacks and her control improved dramatically.

Snacking with type 2 diabetes

People with type 2 diabetes are resistant to insulin, rather than not being able to produce it. Those who are not on any medication will not develop low blood sugar so won't need to snack in the way that people with type 1 diabetes do. You may still want to snack if you get hungry between meals.

If you take insulin or diabetes medications that lower your blood glucose - particularly sulfonylurea tablets, which carry a much higher risk than other tablets of hypos - you may need a snack between meals in order to keep your blood sugar in the normal range.

Can your body mislead you?

Roy* is in his seventies, has type 2 diabetes and has always liked a plain digestive biscuit with his tea. He'd been on insulin for some years but had gradually put on weight so needed a steadily increasing dose. Unfortunately, after a fall, he broke his foot and had to come into hospital as it wasn't healing.

It became obvious when Roy was on the ward that he was now eating half a packet of digestives every time he felt hypo, and this was happening two or three times a day. He insisted that it took these many biscuits to make the hypo feeling go away; he had tried fewer but it just didn't work.

The specialist diabetes nurse spent some time with Roy. For a couple of days she watched as he did things 'his way', but tested his blood sugars before and after the biscuits - when he felt hypo, and when he felt better. She was able to show him that his blood sugar was 12 when he felt low, and 17-18 when he felt better. Roy was having false 'hypo' sensations because he was so accustomed to running high. It took some time for Roy to adjust back, but gradually his control improved, and he gave up digestive biscuits completely.

What should I snack on?

Generally speaking, if you have type 1 or type 2 diabetes, you should avoid high-fat, high-salt foods, such as crisps, iced cakes, and processed foods, and foods high in refined sugars, like sweets and fizzy drinks. Avoid hidden 'extras' such as butter on toast or sugar syrup on tinned fruit.

And you don't need special 'diabetic' snacks.

Diabetes UK says: "We don't recommend snacks labelled 'diabetic', which tend to be expensive and don't offer you any special health benefits. The key is to plan your favourite snacks so they fit into your overall diet, and watch your portion sizes."

Remember, if something tastes very sweet it may be high in sugar, and if something is deep fried it is almost certainly high in fat.

How to make snacks more interesting

Diabetes UK suggests trying the following ideas:

  • Use different types of bread to make snacks. Try pittas stuffed with fillings such as chicken tikka, yoghurt and salad. Or ciabatta or focaccia with mozzarella, tomato and pesto.
  • Toast a teacake and top with sliced banana. Drizzle with a little maple syrup if you like.
  • Smoothies or milkshakes are simple and delicious. Just mix milk, a fruit of your choice and a few ice-cubes. Pour into a glass and enjoy.
  • Pop your own corn. Flavour with salt and pepper, a little sugar, a sprinkle of paprika or even a little finely grated parmesan.
  • Noodles. Make up a 100 g pack of noodles, then add some other bits like spring onions, chopped ham or tuna.

If you can keep a broad range of snack 'ingredients' in your fridge and store cupboard then you should be able to create snacks that appeal to you out of your weekly shop.

*Names have been changed to protect identities.

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Bengali red split lentil dal

i constantly feel hungry, dizzy and weak before eating. even if i have snacks between meals. its quite scary, i feel dizzy, weak, foggy head, my legs ache. once i eat the dizzyness slowly fades but...

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