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Snacking 101: An explainer for people living with T1D

Right now, we’re in our houses more than ever before. We work, learn, sleep and socialise in our house. That’s a lot of time inside!  

You’ve probably found as social distancing restrictions are easing that you’ve developed some habits which make managing type 1 diabetes trickier because you’ve been cooped up indoors. Stuff like staying up late and sleeping in, trouble sticking to a routine and eating at odd times, all of which is completely understandable and normal.  

But – these habits affect how we snack, and how our blood glucose levels react to our snacking, in weird and wonderful ways. Bearing that in mind, it’s important we tune up our knowledge of snacking with T1D. 

So, we asked the experts to give us the low-down on all things snacking, and who better to ask than Dr. Carmel Smart and Emma Fisher, paediatric diabetes dietitians at the John Hunter Children’s Hospital. 

Whats a healthy snack? 

Healthy snacks are food and drink choices which add nutritional value to the diet, whereas poor quality snacks provide excess energy, high amounts of added sugars and unhealthy fats. These combined elements can result in too much weight gain.  

When snacking, its best to choose snacks that contain a source of protein, such as yoghurt or nuts, because these options fill you up and prevent over-eatingVitamin C rich fruits such as Kiwi fruit, oranges and mandarins are also great snacks and can help prevent you catching a cold or the flu. 

Snacking with T1D: Good or bad? 

The simple answer is it depends! To tell the difference between “good” and “bad” snacking with T1D, we need to look at the amount we’re eating or drinking, how often we’re doing it, the type of food or drink, and how well if it’s being covered with insulin. There is a big difference between having a couple of planned portioned healthy snacks a day and grazing.  

Grazing occurs when we frequently eat varied amounts of food at random times of the day/night, often close togetherThe quality of our diet often slips when we graze because we tend to choose high energy and nutrient poor options. It can impact many aspects of our health and lives, such as: 

  • Our main meals – Grazing ruins our appetite, making us choose less nutritious foods or skip meals altogether. 
  • Our teeth – Eating continuously (particularly sugary foods) is bad for teeth and can lead to tooth decay. 
  • Our weight – If we eat too often, our body is unable to use up the energy we’re putting into it, so it is stored, and we gain weight. 
  • Our kids – Grazing is a common cause of fussy eating behaviours and meal refusal in children (which is an additional challenge for those living with T1D).  

However, if incorporated into a routine eating plan, a couple of small snacks a day can help to meet nutritional requirementsregulate our energy and boost our concentration throughout the day (particularly in growing children).  

Snacking and blood glucose levels 

Frequent snacking with T1D can cause continual high BGLs. In fact, several studies have shown that those who skip meals and snack more than 2 times a day have higher HbA1c. They also display less healthy dietary and leisure habits, for example more screen time.  

Converselyroutine meal patterns in children and young people using intensive insulin therapy has been associated with lower BGLs. There are more benefits to keeping a routine, including making time for carb counting and giving insulin before eating. 

Managing snacks with T1D 

People living with T1D should base their diet around a routine eating plan 

By following a routine, you are more likely to think about food choice, check the portion for accurate carb counting, and give insulin before eating – helping to maintain BGLs in target. Spacing meals and snacks apart will also prevent insulin stacking and ensure you have a good appetite for healthy meals. 

Some tips for creating a routine include: 

  • Focus on 3 bigger main meals 
  • Make your snacks small and space them out e.g. snacking 2-3 hours before and after meals during the day 
  • Avoid eating before bed 
  • Designate breaks for snacks and meals at home, like you would at school, to avoid continuous grazing 

It’s also important to note that with intensive insulin therapy, snacks shouldn’t need to be eaten regularly to prevent hypos. Instead, they should be a quick, nutritious energy burst to fuel kids learning and play.  

The CGM traces below highlight the difference between afternoon ‘grazing’ and a regular eating routine with a mid-morning and mid-afternoon snack. 

How does sleep impact snacking?

A good night sleep is also important to prevent craving foods high in saturated fat and sugar. Studies show staying up late at night is related to skipping breakfast. This change in routine can lead to unhealthy snacking which then causes excessive weight gain.

A good bedtime routine is important, and it is necessary to turn off all screens early to stop you staying awake.

Our recommended snack choices

To download a printable PDF of this resource click here for our explainer and healthy snack choices resources.

To further Tune Up your nutrition, you can download Straight To The Point: A Guide for Adults Living With Type 1 Diabetes, check out our Type 1 Diabetes Parents Guide or follow us on Facebook and Instagram.

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