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Health

Blueberries for diabetes

, medical expert
Last reviewed: 03.07.2025
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It is quite easy to make a healthy person's diet complete and varied, because such people do not experience any special restrictions in the choice of products and dishes. But any health problems usually make their own adjustments not only to the lifestyle, but also to the patient's menu. For example, with diabetes, a person is forced to limit himself in carbohydrates and, in particular, in glucose. But the brain cannot live without sweets, and it is so hard to give up these small joys of life. It is good that there are such natural sweet products as some popular berries, which are allowed for consumption by people with high glucose levels in the body. For example, blueberries with diabetes not only do not harm patients, but even help stabilize the patient's condition.

Diabetes and its limitations

Diabetes mellitus is a condition in which increased glucose levels are found in the body's biological fluids. It is a consequence of metabolic disorders. The disruption of carbohydrate and water metabolism in turn causes disruptions in the pancreas, which produces insulin, a hormone that actively participates in sugar metabolism.

It is important to understand that the development of diabetes and pancreatic dysfunction are interconnected. Thus, long-term inflammation of the organ (chronic pancreatitis) worsens its functionality, and the pancreas produces less insulin. The longer the process lasts and the more frequent the exacerbations, the worse the organ functions. In the end, at one not very fine moment, blood and urine tests may show the presence of elevated sugar levels in them.

Under the influence of insulin, sugar is converted into glucose, which our cells use as an energy component. When there is not enough insulin, part of the sugar is released unchanged into the blood and urine, and then simply excreted from the body, without providing any benefit.

It would seem that the body should receive a sufficient amount of glucose with food, but in fact the cells experience a deficiency, which negatively affects the condition of various organs. Over time, abscesses appear on the patient's body, the resulting wounds heal poorly, problems with blood vessels (atherosclerosis and hypertension) and the nervous system (neuropathy develops) appear, vision (retinopathy), the condition of teeth and skin deteriorates.

Due to metabolic disorders, cells lose the ability to retain water, and it is excreted in large quantities by the kidneys. A person experiences constant thirst, and the kidneys are overloaded. It is clear that over time this leads to weakening of the organ and disruption of its functioning. The kidneys are no longer able to cope with the excretion of large volumes of fluid, and edemas are formed.

Blueberries for diabetes can be considered as a source of carbohydrates, without which the body cannot function normally.

Diabetes mellitus can develop in two directions, the result of which will be the same increase in blood sugar levels. In medicine, there is a conditional division of the disease into 2 types, which differ in the mechanism of insulin deficiency development and the therapy carried out.

Type 1 diabetes mellitus means that the pancreas stops producing insulin. This is caused by immune system cells (antibodies) that perceive the insulin-producing pancreatic cells as foreign. Antibodies significantly reduce insulin production until it stops completely.

This type of diabetes, called insulin-dependent, is typical for young people with a thin constitution. It has a severe course, and without the introduction of a dose of insulin, a person can die in a short time. Patients continue a strict low-carbohydrate diet virtually for life, because cases of recovery are rather an exception than a rule.

Type 2 diabetes is a disease of people aged 40 and above. It is most often diagnosed in people with excess weight. In most cases, the cause of the disease is not a malfunction of the pancreas, but a loss of sensitivity of cells to the insulin it produces. Cells, oversaturated with nutrients, interact differently with insulin, which leads to a decrease in its production due to its uselessness.

Less often, the disease develops against the background of chronic pancreatitis or other diseases of the pancreas, as a result of which the functionality of the organ decreases, insulin production decreases and insulin-independent diabetes mellitus type 2 develops. Treatment of the disease in this case consists of oral administration of hypoglycemic agents and dietary adherence.

In the pathogenesis of diabetes mellitus, a decisive role is played by hereditary predisposition and age (the risk of the disease increases twofold). But the impetus for the development of the disease is usually excess weight, stress, viral diseases (along with hereditary predisposition, they increase the risk of developing type 1 diabetes), and pancreatic diseases.

Regardless of the type of disease, the diet requires limiting the consumption of sweet foods, the absorption of which in the body is impaired. Therefore, the question arises whether blueberries are allowed for diabetes, because this berry is considered a sweet product.

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Getting to know a healthy berry

Blueberries are a wild shrub of relatively small stature that gives us very useful fruits. Since this plant is not widespread in our region (its usual habitat is the central and northern parts of Russia), many of us got acquainted with blueberries in absentia, looking at pictures on yoghurts and other fermented milk products with fruit and berry additives or on candy wrappers. We know about their benefits only by hearsay, when we are told that yoghurts with blueberries are some of the healthiest. But all the benefits are hidden in these small dark blue berries, shaped like beads.

Few people know that blueberries are delicious not only in fermented milk products. Based on these berries, called blueberries for their ability to leave hard-to-wash dark stains on the skin of the hands, reminiscent of ink, you can prepare delicious jams, jellies, and juices. During flowering, the plant is valued as a rich honey plant, and ripe fruits can be used as a natural food coloring with beneficial properties, because blueberries are classified as medicinal plants.

It is important to know that not only berries have healing properties, containing easily digestible natural sugars, organic acids (citric, malic, oxalic, quinic, chlorogenic, lactic and succinic), pectins, natural protectors flavonoids, inulin, many useful vitamins and minerals. The leaves of the bush, in which the amount of sugar is limited, also contain all the same useful components, vitamins (A, C, PP, E, group B) and mineral components, as well as tannins and glycosides, especially useful for normalizing blood sugar levels.

Blueberries, despite their sweetness, are considered a low-calorie product and have a low hypoglycemic index (GI), which means that an increase in blood sugar levels can only be expected if you consume the berry in large quantities.

The low calorie content of the product allows it to be used for the prevention of diabetes and the treatment of a borderline condition called prediabetes, which is often diagnosed during pregnancy. The high content of pectin and fiber helps improve the digestion process and prevents excess weight (or helps fight it). The berry can be successfully used in therapeutic diets and included in the children's diet, because it belongs to the category of hypoallergenic products, which means that almost everyone can improve their health with its help.

Since diabetes mellitus types 1 and 2 are characterized by metabolic disorders that negatively affect the condition of various organs and systems, due to the high content of carotene, blueberries help prevent complications of diabetes such as retinopathy and maculopathy, which manifest themselves in deterioration of vision in the patient.

Even healthy people know blueberries as a means of restoring vision. The pharmaceutical market has seen the emergence of many drugs and dietary supplements based on this useful berry, which helps treat vision disorders and prevent vision loss. You usually need to take 3-6 such tablets or 0.2 kg of berries per day to ensure that your vision is always normal. Blueberries help strengthen the blood vessels that supply the eyes with blood and metabolism, making the organ's work more efficient.

What else is blueberry good for diabetes? In addition to weight control and reducing blood sugar levels, blueberries help:

  • normalization of the immune system,
  • prevents the appearance of inflammation in the area of skin wounds,
  • stabilizes the functioning of the pancreas (in case of pancreatitis, it stops the inflammatory process and fights infection),
  • improves blood circulation by strengthening blood vessels and prevents late complications of diabetes in the form of neuropathies and microangiopathies,
  • reducing blood cholesterol due to the plant's natural flavonoid content,
  • reduces the negative impact of free radicals that cause oxidative stress, which becomes one of the risk factors for the development of diabetes (blueberries are an important product for preventing the disease).

Due to these beneficial properties of blueberries, it is not only possible, but even recommended to use it for diabetes. It is believed that it helps treat type 2 diabetes, and in incurable and extremely severe insulin-dependent diabetes, eating blueberries in small quantities helps to safely diversify the diet of patients, reduce blood sugar levels, which will reduce the dose of insulin administered, and prevent various complications of the disease in its late period.

The benefits of blueberries for diabetes are obvious, but in addition to diabetics, it will be very useful for other people, including those who do not yet have serious health problems. After all, blueberries are considered not only a medicinal plant, but also a preventive measure that helps to avoid possible health problems.

If a person has a predisposition to diabetes (there have been cases of the disease in the family), eating blueberries will help prevent the development of this disease, which is dangerous for its late complications and is difficult to cure. In advanced diabetes with excessively high blood sugar levels, when eating any sugars can do a disservice, blueberry leaves will be useful, which, like the berry, can reduce the concentration of glucose in the blood and urine in both prediabetes and diabetes of any degree.

It is clear that it is pointless to limit yourself to medicines based on blueberry berries and leaves for severe forms of diabetes. But the plant will help pharmacy sugar-lowering drugs maintain an acceptable level of glucose in the body, supply it with useful vitamins and minerals, which will reduce the risk of developing various complications.

By normalizing the condition of blood vessels throughout the body, blueberries help normalize blood circulation and blood pressure. They also participate in the synthesis of hemoglobin, improve the functioning of the liver, kidneys and intestines, prevent the deposition of salts in the joints and cholesterol on the walls of blood vessels, and have an antitoxic effect, helping to remove heavy metal salts from the body.

Blueberries have a hemostatic effect, which makes it possible to use them in case of bleeding from the gastrointestinal tract. They also help fight diarrhea due to food poisoning and bacteria hidden in the depths of the oral cavity and nasopharynx. Blueberry decoction is used to fight typhoid fever pathogens.

Vitamins A, C and E, as well as chlorogenic acid, contained in blueberries are considered good natural antioxidants that slow down the aging process of the body and help in the fight against some bacteria and viruses, because they restore the body's defenses. And although the berries have not been noted to have a rejuvenating effect, their regular consumption allows you to look several years younger. In addition, strengthening of blood vessels thanks to vitamin C helps improve blood circulation, the blood supplies oxygen and nutrients to the tissues, which prolongs their normal functioning.

If we consider blueberries from the point of view of their antioxidant properties, we can conclude that they are an excellent preventative measure against diseases such as vascular atherosclerosis, Alzheimer's disease, coronary heart disease, hypertension, cancer and diabetes, the development of which is associated with the above-mentioned free radicals.

Blueberries are a hypoallergenic medicinal plant, useful for many diseases and a delicious dessert, allowed for diabetes. But when there are any disorders in the body, you begin to treat even medicinal plants with special caution. It is clear that sweet berries, which include blueberries, are not the kind of dessert that can be consumed in excess with diabetes. Therefore, a diet is a diet, and if it involves limiting the consumption of sweet products, this applies not only to confectionery, but also to fruits and berries.

Leaves or berries?

It is believed that any part of the plant called blueberry is useful for diabetes. They differ only in sugar content, so patients for whom sugar is a kind of poison try to avoid sweet fruits. This is not worth doing, because the main part of carbohydrates in the berry is fructose, which is not prohibited for diabetes, plus both fruits and shoots, on the contrary, reduce blood glucose levels.

But if there are still concerns about the berries, then with leaves and shoots everything is much simpler. In this case, you don’t have to worry about increasing blood sugar. However, the question arises of how to brew blueberry leaves for diabetes, because these are not tasty berries that can be eaten raw.

Blueberry leaf decoction is a medicine whose healing properties are recognized not only by folk but also by traditional medicine. For its preparation for diabetes, you can use blueberry leaves and young shoots. At the same time, both fresh and dry raw materials prepared in advance are suitable for the medicinal decoction.

For a glass of boiling water, take a heaping tablespoon of crushed leaves and shoots. In order for the mixture to brew well, and the leaves to soften sufficiently and give all the useful substances to the water, it is recommended to steam it in a water bath with the lid closed. Cooking time is 40 minutes. Remove the mixture from the heat, cool and filter. Use only the liquid part, 2 tablespoons three times a day.

Blueberry decoction prepared according to this recipe is considered to be therapeutic for diabetes, as it helps to stabilize blood glucose levels and prevent various complications of this serious disease. But this does not mean that a diabetic should limit himself to this natural medicine.

Blueberry leaves can be used to make aromatic herbal teas and infusions based on several herbs, which will also have a healing effect on diabetes.

For example, you can take equal amounts of blueberry, strawberry and blackberry leaves. Pour 1.5 cups of boiling water (300 g) over 1 tablespoon of chopped herbs and simmer over low heat for a quarter of an hour, then remove from the stove and leave to infuse. When the mixture has cooled, strain it and take 2 tablespoons before each meal (20-25 minutes).

You can also use the following composition: mix blueberry, mint, chicory, dandelion and St. John's wort leaves in equal proportions. Pour 1.5 cups of boiling water over a large spoon of the mixture. Prepare and use according to the previous recipe, as well as other similar compositions:

  • blueberry, plantain, dandelion and nettle leaves,
  • blueberry, primrose, mulberry and dandelion leaves,
  • blueberry leaves and horsetail herb,
  • blueberry and nettle leaves plus dandelion root,
  • blueberry leaves and burdock roots,
  • nettle and blueberry leaves plus elder flowers,
  • mulberry leaves and bark, barberry flowers, fox bilberry,
  • blueberry and strawberry leaves, bean pods, yarrow flowers, rose hips,
  • the upper shoots of blueberries, beans and galega officinalis.

There is also a recipe for a complex herbal decoction used to treat diabetes. The decoction is prepared from a herbal mixture containing equal parts of blueberry leaves, empty bean pods, flax seeds and oat straw. Take 2 glasses of 200 ml of water, pour 2 tbsp of our mixture, boil for a quarter of an hour and leave to infuse for another 55-60 minutes. Then strain the decoction and bring it to the original volume with cooled boiled water.

For 2 weeks, the decoction should be drunk before meals three times a day. The recommended single dose is ½ glass. After a 2-week course of treatment, you need to take a 7-day break, after which the treatment is repeated. It makes sense to repeat the course if the treatment has brought positive results.

For diabetes, you can try taking the following multi-component infusion. The herbal mixture contains equal parts of horsetail, string and St. John's wort, elecampane and zamaniha roots, mint and mulberry leaves, chamomile and elder flowers, and rose hips. Add bilberry leaves (2 parts) to the mixture. Take 1 heaped tablespoon of the herbal mixture per glass of boiling water and leave the mixture to infuse for a quarter of an hour in a warm place with the lid closed. The prepared mixture should be drunk during the day in 3 doses.

As we can see, blueberry leaves for diabetes can be used both to make delicious tea, which you can indulge yourself with daily without any special restrictions, and to make medicinal compositions that are recommended to be taken according to the recipe.

Blueberries for diabetes

Blueberries are one of the few sweet berries that are not only allowed, but also recommended for diabetes. Thanks to its unique properties to control blood glucose levels, blueberries can be consumed regularly without fear for your condition.

Blueberries for diabetes can be included in your diet both fresh and in compotes, jelly, jam, added to desserts and fillings. However, people with excessively high glucose levels need to limit the amount of fruits eaten somewhat. With type 1 diabetes and severe type 2 diabetes, you can eat a little fresh berries and drinks based on blueberries, prepared without adding sugar.

However, blueberries can help those whose blood sugar levels are not so high, which means that the medications they take can even provoke a glucose deficiency (hypoglycemia). We are talking about the initial stages of the disease and prediabetic conditions. Such people can even include blueberry jam made with sugar substitutes in their diet.

Recipes for blueberry jam recommended for type 2 diabetes include not only the fruit and sugar, but also fresh leaves of the bush, and sometimes leaves of other plants.

A tasty and healthy dessert (jam) can be prepared as follows: take half a kilo of fresh berries and boil them over low heat, stirring regularly, until viscous. This will take 1-1.5 hours or more. When the blueberry mass becomes viscous enough, add 30 grams of crushed blueberry leaf to it and leave the jam to cook for another 10 minutes, then add a sugar substitute (sorbitol, etc.) to taste and stir until its crystals are completely dissolved.

What else can be added to jam for diabetics? Along with blueberry leaves, you can add an equal amount of fresh viburnum leaves, a small amount of vanilla or cinnamon powder (to your taste) to the blueberry mass. This will help diversify the table of diabetics and add a new taste to familiar dishes.

But no matter how useful blueberries are, jam is jam, and this is a concentrated sweet product that you need to be very careful with. It is believed that such a dessert will not cause harm with any type of diabetes if you consume it in a total amount of no more than 3 teaspoons per day.

Such thick jam, if boiled well, will be a wonderful filling for baked goods made from rye flour. From more liquid jam you can make delicious drinks, diluting the sweetness with water or tea without sugar. This is the best option for using the product.

For type 2 diabetes, you can try this recipe, which has good reviews. Take equal amounts of berries (dried or fresh) and blueberry leaves, lingonberry leaves and chicory grass. Take 1 tbsp. of the herbal mixture and pour 1 tbsp. of boiling water over it. Boil the mixture for 10-15 minutes over low heat and remove to infuse. Strain the cooled broth, divide into 3 parts and drink in 3 doses. You need to drink the "medicine" 30 minutes before eating.

And yet, if possible, it is better to eat blueberries fresh, because heat treatment always destroys some of the beneficial substances, in particular vitamin C. And fresh fruits contain everything that is given to us by the generous hand of Mother Nature.

Unfortunately, blueberries grow in a limited area of our huge planet, and not everyone can enjoy fresh berries and brew fresh leaves of the plant for medicinal purposes. And even if you manage to buy aromatic dark blue berries at a retail outlet, you can only keep them fresh for a long time by freezing them. But even then, some of the useful substances are lost.

A good option in this regard are dried berries. They can be cooked in the oven at a temperature of no more than 70 degrees to preserve the useful vitamins. A decoction of dried blueberries is used as an effective antidiabetic agent and a natural medicine to improve vision, helping to prevent such a complication of diabetes as retinopathy.

To prepare it, pour 1 heaped tablespoon of dried berries with a glass of boiling water and keep it at a gentle boil on the fire for about 10-12 minutes. After that, remove the mixture from the fire and place it in a warm place (you can use a thermos) for several hours. Take the decoction four times a day. This should be done half an hour before meals. Single dose - 1 tablespoon.

The decoction therapy should be continued for at least 2 months, after which there should be a two-week break and, if necessary, the treatment is repeated.

It would seem that blueberries are a good solution for treating diabetes, allowing you to control your blood sugar levels, but how can you do this if there is no bush plantation nearby and nowhere to buy healing berries, shoots and leaves? In pharmacies or on the Internet, you can look for dry blueberry extract, which contains crushed parts of berries and leaves of the plant. Preparations from the extract of a plant useful for diabetes are usually released in the form of capsules or tablets. They should be taken in courses for therapeutic purposes to normalize blood glucose levels, especially if sugar-lowering drugs have an excessive effect and lead to the development of hypoglycemia.

You can also find information on the Internet about another interesting product produced by the company "Lickberry". This is a blueberry paste containing ground blueberries and useful components contained in the fruit seeds, which are not available when eating the fruit, because the seeds themselves are not digested in the body and are removed from it unchanged.

Due to the inclusion of the seed contents in the paste, the amount of chlorogenic acid in it is more than 10 times greater than in the pulp of the berries. The paste also has a high content of omega acids and vitamin E.

The paste is obtained by hydrolyzing the berries, which releases pectin (a natural gelling agent), and the composition takes the form of a thick jelly, which is almost completely absorbed by the intestines.

The paste can be used for any type of diabetes after meals. Patients with type 2 diabetes should take 1 tablespoon of paste diluted in ½ glass of water in the morning and evening. Those diagnosed with type 1 diabetes are recommended to use the paste in the morning and during an afternoon snack, starting with 1 coffee spoon and increasing the single dose to 1 tablespoon (for children, the dose is increased to 1 dessert spoon).

If there is no effect within 14-21 days, the drug is taken according to a different scheme. The first dose of the paste is taken after lunch, the second - half an hour before going to bed.

Information about blueberry paste is provided for informational purposes. This is not an advertisement for the product, but information about one of the ways to help patients with diabetes if they have difficulty acquiring blueberry raw materials. How to control blood sugar levels is up to everyone to decide, especially since the use of blueberries and blueberry-based preparations does not replace the main treatment prescribed by a specialist doctor, but only complements it, making it more effective and enjoyable (or tasty, as you like).

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Contraindications

Blueberries are among the medicinal plants with a minimum of contraindications for use, which allows them to be consumed by people with various diseases or without them. Despite the noticeable sweetness of the berry, diabetes, when a person is forced to adhere to a low-carbohydrate diet and control blood glucose levels, is not included in the list of restrictions on the use of blueberries. Moreover, blueberry fruits and leaves are recommended for high blood sugar, since they have the ability to correct blood composition indicators and prevent possible complications of the disease, manifested in deterioration of vision, disruption of the kidneys and blood vessels, etc. Blueberries for diabetes are not just a delicious dessert, many of which are inaccessible to sick people, but also a real medicine.

Problems may be mainly for those who suffer from constipation. The fact is that in addition to lowering blood sugar and improving vision, blueberries have the ability to stop diarrhea caused by food poisoning, gastrointestinal infections, and digestive system problems. There is even a popular recipe for diarrhea in the form of an alcohol tincture of dried blueberries.

Blueberries should also not be consumed by people who have oxalate stones in the urinary system or are prone to their formation. Oxalic acid in blueberries contributes to the formation of such stones.

Possible risks

It is clear that any plant can act as an allergen for people with a predisposition to allergic reactions. If the use of berries or medicine based on leaves causes unusual reactions (itching, skin rashes, runny nose, etc.), it is better to refuse them.

Reviews

Blueberries are very tasty, aromatic and healthy berries, which also help people with high blood sugar to stabilize their condition and avoid dangerous complications. But it would be wrong to say that blueberries are a panacea for diabetes, even despite all the benefits of berries and shoots. With prediabetes, when blood sugar is slightly elevated, a diet that includes blueberry dishes will help keep sugar levels normal. But if glucose levels are high, the plant will only help to lower them slightly and diversify the patient's diet, but nothing more.

Some reviews have a somewhat negative connotation, despite the fact that even doctors do not deny the benefits of blueberries for diabetes. The reason for this incident is that people place too much hope on the plant, forgetting about other medications that diabetics simply need. With high blood sugar, blueberries can only help a person prevent complications and reduce the dosage of drugs, but in no way normalize blood sugar.

Another mistake many patients make is that they expect results from a single use of berries. But this does not happen. To feel the result, you need to eat fresh berries, jam and blueberry infusions daily for a long time.

But there is one important point here. You should not think that the more you take the potion, the more effectively the sugar in the body will be reduced. There is such a thing as the recommended dose, which, when consumed, will show the maximum effect. This is the dosage that you need to adhere to in order not to harm yourself, especially when it comes to berries. After all, blueberries are a sweet berry, and diabetics cannot eat a lot of sweets.

Blueberries for diabetes are a plant whose benefits are beyond doubt if you include berries and berry- and leaf-based formulations in your daily menu. The main thing is to consume the natural medicine regularly, but not to exceed the recommended dosages. Delicious drinks and desserts with blueberries in combination with diet and drug treatment (if necessary) will help to avoid various unpleasant consequences and complications of such an extremely unpleasant disease as diabetes.

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