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Carbohydrates are our main source of energy and provide important nutrients for good health and a healthy, balanced diet. All the carbohydrates you eat and drink are broken down into glucose. The type, and amount, you consume can make a difference to your blood glucose levels and diabetes management.
This is another type of carbohydrate, which you can’t digest.
Make sure you eat both types of fibre regularly. Good sources of fibre include fruit and veg, nuts and seeds, oats, wholegrain breads and pulses.
Everyone needs some carbohydrate every day. The actual amount that you need to eat will depend on your age, activity levels and the goals you – and your family – are trying to achieve, for example trying to lose weight, improve blood glucose levels or improve sports performance. The total amount of carbohydrate eaten will have the biggest effect on your glucose levels.
If you’re living with diabetes, and take insulin, you’ll need to take that into account when eating carbs. Learn about which foods contain carbohydrates, how to estimate carbohydrate portions and how to monitor their effect on blood glucose levels.
There are special courses available, such as the DAFNE course, which your diabetes healthcare team can tell you about.
Our downloadable PDF e-book, Carbs Count, provides an introduction to carbohydrate counting and insulin dose adjustment. It takes you through the essential information, with practical examples and exercises. You candownload it for free through our online shop.
All carbohydrate is converted into glucose. In someone without diabetes, the body produces insulin automatically to deal with the glucose that enters the blood from the carbohydrate-containing food that we eat and drink.
In Type 1 diabetes the same principle applies but because your body doesn’t produce any insulin, you have to take insulin, either by injections or a pump. This will help to lower the glucose in the blood after eating carbohydrate-containing foods. Most people follow twice-daily or basal bolus insulin regimes.
If you’re living with Type 1 diabetes, you might find that carbohydrate counting, or carb counting, is an effective way of managing your blood glucose levels – it means that your insulin dose can be individually matched to the amount of carbohydrate you eat and drink.
Being aware of the amount of carbs in food and drinks is important for everyone with diabetes, but carb counting is particularly helpful for those on basal-bolus insulin regimen. This is when the person with diabetes (mostly Type 1 diabetes) injects insulin with each meal or uses an insulin pump.
Although carb counting requires a great deal of time and effort, once mastered it can lead to better blood glucose control and greater flexibility in the times and amount of carbohydrate you eat. It doesn't mean total freedom to eat whatever you want in excess as this would be unhealthy for anyone, although special occasions and treats can be more easily incorporated and insulin adjusted to match.
Carbohydrates can be counted in two ways, in grams or as carbohydrate portions (CP). One CP is usually equal to 10g of carbohydrate. It is important that you find the method that works best for you.
Once you’ve got to grips with estimating the amount of carbohydrate you are going to eat and drink, the next key piece of information you need is your insulin-to-carbohydrate ratio. Insulin-to-carbohydrate ratios vary from person to person, so you will have your own personal ratio depending on your age, weight, activity levels and how sensitive you are to insulin. Your diabetes healthcare team will help you work it out and, eventually, you may even have a different insulin to carbohydrate ratio for each meal. They will usually estimate your starting insulin-to-carb ratio and subsequently fine-tune this based on your blood glucose control.
If you know how many grams of carbohydrate are in a meal and your insulin-to-carb ratio then you can work out the number of units of bolus insulin you need to take for the meal.
For example: if you are planning to eat 70g of carbohydrate at your meal and your insulin to carbohydrate ratio is 1 unit of bolus insulin for every 10g carbohydrate then you will need to take 7 units of bolus insulin.
The amount you actually take will also depend on other factors such as your blood glucose level, illness or planned activity.
There are five ways you can count carbohydrate in food and drink.
If you look at the labelling on the back of a ready-meal, you'll see something that looks like this:
Typical Values |
100g contains |
Each oven baked meal (317g) contains |
Energy |
433kJ (103kcal) |
1372kJ (325kcal) |
Fat |
1.7g |
5.4g |
Saturates |
0.9g |
2.9g |
Carbohydrate |
14.1g |
44.7g |
Of which sugars |
2.0g |
6.3g |
Fibre |
1.2g |
3.8g |
Protein |
7.1g |
22.5g |
Salt |
0.4g |
1.3g |
If you ate all of this ready meal, the amount of carbohydrate you would count is 44.7g of carbohydrate. It is important to count the total amount of carbohydrate and not the 'of which sugars' value. When using the per portion value be sure that this is the actual portion you are planning to eat.
On the back of foods like pasta or, in this case, basmati rice, you'll see food labelling information like this:
Typical Values |
As sold 100g contains |
Energy |
1515kJ (360kcal) |
Fat |
1.0g |
Saturates |
0.2g |
Carbohydrate |
77.4g |
Of which sugars |
0.2g |
Fibre |
1.8g |
Protein |
8.5g |
Salt |
<0.01g |
When using the per 100g value, calculate the carbohydrate for the actual amount of the food or drink that you are going to have. For example, if you were planning to cook and eat 80g of this rice the amount of carbohydrate you would count is 61.9g of carbohydrate and not 77.4g. It is worthwhile investing in a good set of scales that are flat based, digital and can be zeroed. It is also important that your scales are accurate to within 5g. The cooked weight of foods like pasta, rice and potatoes will vary from the raw or pre-cooked weight, so check which values you are using.
What should you do when food doesn't carry a nutrition information label or you are eating out and don't have the recipe for what you are eating or a set of scales? Although these times can be more challenging, reference lists and visual guides, such as Carbs & Cals, will come to your rescue and help you estimate carbohydrate. They list the amount of carbohydrate in handy measures, such as “1 bread roll “, “1 medium banana”, or “1 scoop of ice cream”. And some contain pictures for comparing, too.
Using the Diabetes UK recipe pages or cookbooks can take the hard work out of calculating the carbohydrate content of more that 250 recipes for you.
And there's no need to throw out your favourite recipes and cookbooks. Taking the time to work out the carbohydrate values of your day-to-day meals helps you build up a personal reference list that you can use again and again.
Many restaurants and cafes will now list nutritional information for their products online. You may find information that looks like this:
Bacon breakfast roll
|
Per 100 g |
Per 114 g serving |
Energy |
1381.6 kJ |
1575 kJ |
Energy |
328.1 kcal |
374 kcal |
Fat |
19.2 g |
21.9 g |
of which saturates |
|
|
Carbohydrate |
22.2 g |
25.3 g |
of which sugars |
|
|
Fibre |
1.3 g |
1.5 g |
Protein |
15.8 g |
18 g |
Salt |
3.07 g |
3.5 g |
Many restaurants and snack bars are now providing nutrition information for their menus in a response to us all becoming more health aware. The nutrition information for this bacon breakfast roll was found in seconds after a quick search on the internet. Bear in mind that the values are average values and the dish that you are served may vary in size and content. You still need to use your judgement and experience
Ever heard the phrase “don't run before you can walk”? Well it's certainly true with carbohydrate counting. Your first step has to be finding out more (see below). But there's no harm in the meantime putting down the foundations for building a new way to manage your diabetes.
To carbohydrate count successfully you will need a whole lot more information than this article. You will need to learn all about carbohydrates, learn how to adjust your insulin and be dedicated to monitoring your blood glucose levels frequently. You will also need the support of professionals either in the form of your diabetes healthcare team or one of the structured diabetes education courses available. You can find out about courses available in your area from your diabetes healthcare team.
The glycaemic index (GI) tells us whether a food raises blood glucose levels quickly, moderately or slowly. This means it can be useful to help you manage your diabetes. Different carbohydrates are digested and absorbed at different rates, and GI is a ranking of how quickly each carbohydrate-based food and drink makes blood glucose levels rise after eating them.
If you focus only on the GI of foods, without looking at other aspects, your diet could be unbalanced and high in fat and calories, which could lead to weight gain (making it harder to control your blood glucose levels) and increase your risk of heart disease. It’s important to think about the balance of your meals, which should be low in saturated fat, salt and sugar and contain plenty of fruit and vegetables.
The amount of carbs you eat has a bigger effect on blood glucose levels than GI alone. For example, pasta has a lower GI than watermelon, but pasta has more carbs than watermelon, so if you eat similar amounts of either of these two foods, the pasta will have more of an impact on your blood glucose levels. The most important thing to do is get your portion size right – once you do this, you will get an added bonus for choosing low-GI alternatives.
There are books that give a long list of GI values for many different foods. This kind of list does have its limitations. The GI value relates to the food eaten on its own and in practice we usually eat foods in combination as meals. Bread, for example is usually eaten with butter or margarine, and potatoes could be eaten with meat and vegetables.
An additional problem is that GI compares the glycaemic effect of an amount of food containing 50g of carbohydrate but in real life we eat different amounts of food containing different amounts of carbohydrate.
Note: The amount of carbohydrate you eat has a bigger effect on blood glucose levels than GI alone.
When it comes to your diet, you probably already know you need to eat less saturated fat, salt and sugar and at least five portions of fruit and vegetables a day. But did you know that wholegrains should also feature? As a nation, we are not eating enough of them.
Wholegrains are the seeds of cereal plants such as wheat, maize, corn, rye, barley, oats, rice and quinoa. In their natural unprocessed state, grains consist of three parts:
The endosperm is the central part of the grain and is a concentrated source of starch. The outer most layer, the bran, is a rich source of insoluble dietary fibre, B vitamins and phytochemicals. The germ is a concentrated source of protein, ‘healthy’ fats, B vitamins and vitamin E.
When wholegrains are refined, for instance to make white flour, most of the bran and germ are removed and with it most of the nutrients, dietary fibre and other protective components, which are concentrated in the bran and germ layers.
Wholegrain foods, retain all three parts of the grain. They may be eaten whole (eg brown rice and oats), cracked (eg bulgur wheat), or milled into flour and made into foods like bread and pasta. To qualify as a wholegrain, a food must contain 51 per cent or more wholegrain ingredients by weight per serving.
Wholegrains are a smart choice, not just for people with diabetes, but for the whole family. If you do have diabetes, wholegrain foods are usually better for managing blood glucose levels because they tend to have a lower glycaemic index (GI). This means they do not affect blood glucose levels as quickly as refined carbohydrate foods. However, since wholegrains are also carbohydrate foods, and all carbohydrates affect blood glucose levels, be mindful of your portion sizes.
Some studies have shown that healthy diets, rich in wholegrain foods, can reduce the risk of heart disease, stroke, certain types of cancer and Type 2 diabetes. The ways in which wholegrains help prevent these conditions are not fully understood. They can play a part in maintaining a healthy body weight over time as part of a healthy, balanced diet and help keep your gut healthy due to the compounds they contain called phytochemicals. Studies also suggest that wholegrain foods may be more filling than their refined counterparts, which may help reduce the urge for snacking between meals and help people manage their weight.
In the UK there are no official recommendations, but most experts recommend at least three servings a day. It’s important to replace refined products with wholegrain foods to help keep your blood glucose and weight in check in the long term.
1 serving of whole grains equals:
If you follow a gluten-free diet there are plenty of gluten-free wholegrains that you can enjoy such as brown rice, quinoa, uncontaminated oats, millet, sorghum, teff and buckwheat.
Wholemeal, wholewheat and wholegrain bread are basically different terms for the same thing and all are wholegrain. However, granary bread is slightly different and refers to bread that contains malted wheat flakes that are added to give it a characteristic texture. This may or may not be made from wholemeal flour, so you will need to check the label. Wheat-germ bread is made from white flour to which a portion of wheat germ has been added back, it is not wholegrain.
There are plenty of simple and tasty ways to introduce wholegrains into your diet.
Everyone should eat some starchy foods every day as part of a healthy, balanced diet.
Although your usual favourite carbohydrates, such as pasta, rice, noodles and potatoes are very popular, they’re not the only options. You could try grains like couscous, quinoa and barley to introduce a new flavour to your favourite dishes.
Barley and quinoa are both low-GI foods, and quinoa is also a source of protein and fibre, and works particularly well in salads.
The sweeter taste and creamy texture of sweet potatoes can make an interesting change from potatoes – they’re particularly delicious baked.
Or, you might want to try a new variation on rice. There are lots you could try, including brown rice, sticky rice, wild rice and fragrant rice, which are very popular in a range of dishes from around the world.
Instead of sticking to pasta and rice, try these recipes for vegetable alternatives to rice and pasta, which will help you to cut down on your carbohydrate portion sizes – if you need to – as well as adding to your five a day:
You could also try using slices of marrow in place of some of the pasta sheets when making lasagne.
If you’re living with diabetes, or even if you’re not, you might think sweet foods are a barrier to your healthy, balanced diet. As a general rule, everyone should be eating less sugar – but sometimes, only something sweet will do.
If want to lose weight, or you’re trying to keep your blood glucose levels stable, you may want to know whether artificial sweeteners could help. If you browse around your local supermarket, you’ll see a huge range of sweeteners on offer, so it can be baffling to know which, if any, to go for.
Sweeteners are ingredients that are added to food to enhance sweetness. They can be grouped in different ways: One way is to loosely group sweeteners as: sugar or sugar substitutes.Another way to group sweeteners is whether the sweetener is: natural or artificial.
One of the most useful ways of grouping sweeteners is to look at those that have nutritive value, ie nutritive sweeteners, and those without nutritive value, ie non-nutritive or ‘low-calorie’ sweeteners.
There are different types of nutritive sweeteners, but they all contain carbohydrate and provide calories. They are usually referred to as ‘sugars’ or ‘added sugar’, but they can also appear in the ingredient list of food packaging as:
One group of nutritive sweeteners is polyols, which are sugar alcohols, and include:
They can be natural or artificially produced. Polyols contain carbohydrates and calories, but they have fewer calories and less of an effect on blood glucose levels than sucrose (sugar).
It’s not exactly clear how the polyols should be ‘counted’ by people who are adjusting their insulin dose according to the carbohydrate they consume, as not all of the carbohydrate from polyols is absorbed. The amount of calories provided by polyols varies, as the amount of carbohydrate digested or absorbed by the body varies, depending on the type of polyol. People with diabetes should speak to their healthcare team for individual advice about this.
Polyols are usually used in products marketed as ‘diabetic’ or ‘suitable for diabetics’ and, as these products can be as high in fat and calories as standard products, Diabetes UK and the European Commission Regulations don’t recommend them. Consuming large amounts of polyols can have a laxative effect, causing bloating, flatulence and diarrhoea.
Non-nutritive sweeteners can be one way of reducing your overall carbohydrate and calorie intake if you substitute it for nutritive sweeteners like sugar.These are sometimes called ‘artificial sweeteners’ and are usually found in:
The terms ‘non-nutritive’ and ‘artificial’ sweeteners are used interchangeably.
There are various artificial sweeteners licensed for use in the UK. These include:
Some products are made from a combination of two artificial sweeteners. For example, Hermesetas Gold sweetener is made from a blend of aspartame and acesulfame-K.
They can give you a burst of sweetness, while reducing your sugar and calorie intake because they contain little or no calories or carbohydrates and don’t affect blood glucose levels.
Artificial sweeteners come in granules, tablets or liquid form. Most of them can be used in cold and hot foods, but not all can be used for cooking:
Only small amounts of artificial sweeteners are needed as they are intensely sweet.
A relatively new group of non-nutritive sweeteners include naturally sourced, calorie-free sweeteners made from the stevia plant, eg Truvia and Stevia. They are 200–300 times sweeter than sucrose (sugar) and are heat stable, so can be used in cooking and baking.
It can be confusing to group together sweeteners as the terminologies are open to interpretation. For instance, some products from the stevia plant are marketed as ‘natural’, even though they’re processed and refined. Yet, some of the other products marketed as artificial sweeteners may be derived from naturally occurring substances. For example, sucralose, which is used in Splenda, is derived from sugar (sucrose). Whatever the name, grouping or terminology, it’s important to ask what is in the particular sweetener and whether the sweetener or product has carbohydrate or calories, and how that fits into your individual goals for healthy eating.
A major question that often comes up is how safe sweeteners are. There has been, and continues to be, some bad publicity and controversies about certain artificial sweeteners.
All non-nutritive sweeteners used in foods in the EU have to undergo rigorous safety testing before being approved by the European Commission.
Food ingredient manufacturers have to provide evidence from safety studies showing that the sweetener in question:
As part of the approval process for each non-nutritive sweetener, an Acceptable Daily Intake (ADI) level is set. The ADI is the estimated amount per kilogram of body weight that a person can consume, on average, every day, over a lifetime without risk. ADIs are set 100 times less than the smallest amount that may cause health concerns, so it’s extremely difficult for most people to reach the ADI. With these checks, the current levels of intake of artificial sweeteners in the UK are safe, although people with phenylketonuria (a rare metabolic disorder) are advised to avoid sweeteners containing aspartame.
It’s a personal choice whether you decide to use sweeteners or not. If you decide to use sweeteners, but you’re unsure, speak to your diabetes healthcare team for individual advice, and check labels and ingredients on food packaging, as this can help you to make informed choices.
We all know we need to eat a healthy, balanced diet that’s low in saturated fat, sugar and salt to keep our weight, cholesterol, blood glucose and blood pressure in check. Sugar is a type of carbohydrate and because all carbohydrates affect blood glucose levels, reducing your sugar intake can help to keep blood glucose levels under control. As sugar contributes no nutritive value, apart from carbohydrates and calories, it has ‘empty calories’ and so is not good if you’re looking to manage your weight. This doesn’t mean that people with diabetes should have a sugar-free diet. In fact, it’s almost impossible to have a sugar-free diet in the long term. And, it’s also worth remembering that products labelled ‘sugar-free’ aren’t necessarily low-calorie.
We all eat way too much sugar – it contributes to obesity, tooth decay and is putting people at risk of Type 2 diabetes. The Scientific Advisory Committee on Nutrition (SACN) has advised that we need to drastically reduce the amount of sugar we eat.
Here are some tips to help us slash the sugar in our diets.
Sugar is found naturally in fruit, vegetables, milk and milk products – all important foods for a healthy, balanced diet.
What we do need to cut down on, though, is the ‘free sugars’ in food and drink – this includes any added or ‘hidden’ sugar as well as the ‘natural’ sugars in honey, syrups and fruit juices.
Added sugar is the sugar we add to our food and drink. This includes the sugar we stir in our tea or the caster sugar we add to our baking. However, most of the sugar we eat is ‘hidden’ as food manufacturers have put it into a lot of the food and drinks we buy. It’s very easy to be unaware that the amount of sugar you’re consuming is reaching unhealthy levels because it comes in so many forms and in so many products.
Even if we don’t see the word 'sugar' listed in the ingredients, it’s often there, but under a different name. Look for any of the following words, which indicate that sugar has been added.
Although honey, agave nectar and maple syrup are marketed as healthier alternatives to sugar, they’re really just other forms of sugar.
Our intake of ‘free sugars’ should not be more than 5 per cent of our daily energy intake.
In other words, the maximum daily sugar intake for:
Apart from the obvious places like cakes, biscuits, chocolates, sweets and fizzy drinks, sugar is lurking where we wouldn’t expect it – such as in sauces, ready meals, bread and even bottled flavoured water.
(Key: Measurement of of sugar varies; 1 sugar cube or 1 tsp is estimated to be equal to 4g sugar)
The easiest way to cut down on sugar is to swap sugary drinks, including fruit juices and smoothies, to water, lower-fat milks, sugar-free and no-added sugar drinks. In the case of fruit juices and smoothies – it’s better to eat the whole fruit itself because we’re then getting the benefits of eating fibre, and the sugar in the fruit is absorbed more slowly in our bodies.
Swap regular cola for diet cola...
...and save 9 sugar cubes
Swap flavoured milk for semi-skimmed...
...and save 8 sugar cubes
Swap orange juice for the whole fruit...
...and save 5 sugar cubes
Try to reduce the sugar you're adding yourself and look more closely at food labels for all that ‘hidden’ sugar.
For good health, and to keep our weight in check, it is not advisable to eat too much fat, especially the saturated fat found in butter, ghee, lard, pastries, cakes and processed meats.
Food manufacturers have created hundreds of low-fat products and marketed them to us as ‘healthy’. However, the taste of many of these products was altered by the removal of most of the fat, so sugar was added to the food to compensate. But what we're eating is still high in calories and not much healthier.
Porridge is a good source of fibre
Increasing the amount of fibre in your diet can help you manage your diabetes. It also helps keep your gut healthy and can reduce your blood cholesterol, which lowers your risk of cardiovascular disease. If you are trying to maintain a healthy weight, it can also help you.
The Scientific Advisory Committee on Nutrition (SACN), looked at the role of fibre in maintaining good health, published these new recommendations in July 2015:
Currently, the average adult in the UK consumes only around 19g per day.
Here we’ll help you identify foods that are high in fibre and simple ways you can increase your intake. Remember that you’ll also need to increase the amount you drink. If you have diabetes, or are just managing your weight, the best options for drinks are water, no-calorie/low-calorie sugar-free drinks, unsweetened tea or coffee with milk.
Dietary fibre is a type of carbohydrate that’s found in plant-based foods. It’s not absorbed or digested by the body, but plays an important role in maintaining good health. There are two types of dietary fibre – soluble and insoluble. Most foods contain both types, but are usually richer in one type than the other.
Found in oat, oat bran, linseeds, barley, fruit and vegetable, nuts, beans, pulses, soya and lentils.
Good sources include: wholemeal bread, bran, wholegrain cereals, nuts, seeds and the skin of some fruit and vegetables.
Having diabetes can increase your risk of cardiovascular disease. Evidence shows that increasing your intake of fibre, especially cereal and wholegrains, can help reduce the risk of cardio-metabolic diseases (this includes cardiovascular disease, insulin resistance and obesity) and colo-rectal cancer.
Higher intake of oat bran also leads to lower cholesterol levels and lower blood pressure.
Dietary fibre absorbs fluid and increases the bulk of waste matter, making your stools softer and easier to pass. Foods higher in soluble fibre have a particular role in reducing blood cholesterol. Increasing your dietary fibre can also help with managing your weight. These foods are filling and most are lower in glycaemic index (GI), which can help to control your appetite and have less of an effect on blood glucose levels.
To achieve the new SACN guidelines, we need to aim for at least five portions of fruit and vegetables a day. We need to try to base our meals around starchy carbohydrates, choosing wholegrain varieties, and include high-fibre snacks.
Here are some ideas, along with their fibre and carb content, to get you started:
Breakfast |
Fibre |
Carbs |
Mueseli (50g) with a small banana | 5.4g | 49.1g |
Muesli (50g) without a small banana | 4.3g | 33.6g |
2 slices wholemeal toast | 7.3g | 34.9g |
2 wheat biscuits with a small chopped banana | 5.0g | 43.2g |
2 wheat biscuits without a small chopped banana | 3.9g | 27.7g |
Porridge (160g made up) 1tbsp of sunflower seeds | 3.2g | 16.2g |
Lunch or main meals |
Fibre |
Carbs |
Jacket potato (100g) with baked beans (80g) | 6.5g | 33g |
Sandwich made with 2 slices of wholemeal bread and hummus (1 tbsp) |
6.8g | 33.4g |
Wholewheat pasta (150g) with roasted vegetables in tomato sauce (180g) | 10.4g | 45.8g |
Lentil curry (140g) with brown rice (100g cooked) | 4.2g | 50g |
To increase your fibre intake even further, add salad or vegetables to your lunch or main meal.
Keep an eye on the portion sizes when you are eating these snacks, especially if you are watching your weight.
You can help your children to increase their fibre intake with the following ideas:
You can compare the back of pack nutritional labels on pre-packed foods and choose the food with the higher amount of fibre. At times this information may not be available but there are other ways of choosing foods high in dietary fibre:
Aiming for 30g a day may feel like a lot. As long as you try to increase your intake aiming to meet the recommendation slowly, you will be on the right path. Always speak to your healthcare professional before changing your diet.
Gone are the days when all you can find in your supermarket is white, ready-sliced bread. There are so many different types of breads available now, so your choice really is only limited by your imagination. And, if you’ve got diabetes, you may also want to think about other factors, such as carbohydrate content and how much fat and how many calories are in the bread you’re eating.
Bread is a source of carbohydrate. During digestion, carbohydrate is broken down into glucose, which is used by the cells of the body as their main source of energy. There are two types of carbohydrate: starchy carbohydrates and sugars. Bread falls into the starchy carbohydrate category. All carbohydrates affect blood glucose levels.
Carbohydrate requirements vary between individuals and depend on age, gender, weight and physical activity. The Reference Intake (RI) of carbohydrate is 230g for women and 300g for men. These figures are just a guide and are based on the requirements of an average woman and man. Depending on your nutritional goals, you may require less.
Most supermarkets and local markets contain different types of bread. Here’s what you need to know next time you’re choosing a loaf.
Serve with:
Per slice:
Great served with turkey, chicken or Swiss cheese with shredded lettuce, tomatoes and reduced-fat mayo. Or, try smoked salmon and reduced-fat cream cheese.
Per slice:
Serve warm with jam or pure fruit spread for an indulgent treat.
Per individual brioche (45g):
Serve with your favourite Italian dishes, and try to buy ready sliced so you can control your portion sizes and freeze the rest. This way, you won’t be too tempted to polish off the whole loaf. Look out for reduced-fat garlic bread, but bear in mind it's still fairly high in fat and calories.
Per slice:
Serve with vegetable and meat curries. Try to avoid adding extra butter, margarine or ghee.
Pasta, potatoes and rice... are all carbohydrates that cause a surge in blood glucose levels as they are broken down. For people with diabetes, these surges in glucose can be tricky to manage and cause problems over time. But what if simply changing the way these foods were prepared and cooked meant this was less likely to happen?
An experiment on the BBC TV show Trust me, I’m a Doctor, led by Dr Denise Robertson (senior nutrition scientist at the University of Surrey), showed that eating cooled or reheated pasta – turning it into ‘resistant starch’ – could help to reduce the rise of blood glucose levels.
Though further studies are needed, findings could have long-term benefits for people with diabetes...
At Positano Italian restaurant in Guildford, Surrey, 10 of the staff agreed to take part in an experiment, devised by Dr Robertson. Each of them ate one bowl of white pasta a day for three days. On each day the pasta was prepared in a different way (as follows) and topped with the same simple tomato sauce.
After eating each bowl of pasta the participants measured their blood glucose levels every 15 minutes for two hours.
Starch is the most common carbohydrate in our diets and is essentially a chain of glucose molecules linked together. Raw starchy foods (e.g. raw potatoes) have a highly ordered structure and are hard to digest, but heating them in water weakens this structure, making it easier for the gut to break down each chain and absorb glucose into the blood.
Glucose from cooked starchy foods, such as white rice, pasta and potatoes, is absorbed almost as quickly as glucose from a sugary drink. We say these foods have a high ‘glycaemic index’ or GI.
However, when starchy foods are cooled their structure is reorganised again and the digestive enzymes in your gut can’t break them down as easily. The food now contains more ‘resistant starch’, which is not broken down and essentially becomes fibre.
This explains why the chilled pasta caused a smaller rise in blood glucose – but why was reheated pasta even more effective?
This is where Dr Robertson’s research is ground breaking. “The influence of cooling we’ve known about for 20 years,” she says, “but the influence of reheating after cooling was unexpected. We’re still not sure exactly why it works. All we can assume is that the process of heating, cooling and reheating pasta or other starchy foods must be creating more resistant starch.”
Dr Robertson warns that there are various ways of reheating food, at different temperatures and for different lengths of time and that this is a detailed part of the research that she is currently looking into.
Dr Robertson is one of the world’s leading researchers of ‘resistant starch’ and, with funding from Diabetes UK, has studied its impact on people at high risk of Type 2 diabetes and people with Type 2 diabetes for the first time.
According to Dr Robertson, there are two health aspects to ‘resistant starch’.
Dr Robertson is keen to point out her work doesn’t mean we can all eat as many carbs as we like if they are cooked in this way. But these changes could help people to dramatically improve the health impact of carbs, just by the way they prepare everyday starchy foods. “We’ve never said that food with more resistant starch is lower in calories,” she says, “Because it’s not. There will be a small calorie difference because you’re getting less glucose, but it’s not a huge amount, so it’s not going to cure obesity.”
Dr Robertson is continuing her research in this area and emphasises there’s a lot of potential for ‘resistant starch’ but also a lot we still don’t know.
Try these simple healthy swaps to get more resistant starch into your diet without changing what you eat:
Instead of: | Try: |
---|---|
Hot pasta with sauce | Cooked and cooled pasta in a pasta salad |
Hot, boiled new potatoes | Cold, boiled new potatoes as part of a green salad |
Overripe bananas | Slightly underripe bananas (green-yellow) |
Fresh bread | Frozen and defrosted bread |
… that a healthy, balanced diet is the best way to maintain a healthy weight and can help people to manage Type 2 diabetes or reduce the risk of developing the condition. Foods that include resistant starch add to this balance and allow individuals to incorporate more fibre into their diets. It is very important to follow food safety guidelines when cooling, storing and reheating foods in order to minimise the risk of potential food poisoning. Go to the home hygiene section of the NHS website for more information on this.