What is considered "fructose intolerance"?
Intolerances are quite common in our society. Fructose intolerance, in particular, has become a major problem for many of us. This condition occurs when the body cannot properly absorb or metabolise fructose, a type of sugar found in fruits, vegetables, honey and many processed products.
What does fructose intolerance actually involve?
Fructose intolerance is essentially the body's inability to process fructose correctly. While many think that eliminating fruit from the diet is enough, the reality is more complex: fructose is present in a wide variety of foods, including vegetables, cereals, honey and especially sucrose (table sugar), which is found in many processed products, sweets and sweetened beverages.
This represents a significant challenge for those trying to maintain a healthy diet. This is why we created Frusano: to make life easier for people with fructose intolerance. We started by carefully analysing fructose levels in foods and later developed our own specific products. Today we offer a wide range of low-fructose products that help people lead healthier lives.
Intolerance or malabsorption of fructose has no cure and no pharmacological treatment. In the case of HFI (hereditary fructose intolerance), many people develop a natural aversion to vegetables, fruits and sweets, which protects them from ingesting fructose. However, not everyone has this adaptation.
Those who develop the intolerance later often find it more difficult to follow a fructose-friendly diet, as they have to give up eating habits acquired over the years.
Unlike the intestinal type (also called fructose malabsorption), where a low-fructose diet may be sufficient, in HFI it is essential to eliminate fructose almost completely, keeping it below 1 gram per day.
This extreme restriction makes eating a daily challenge and significantly affects the quality of life of those suffering from this condition.
Types of fructose intolerance and how to recognise them
Not all fructose intolerances are the same. There are two types of intolerance, which differ in both cause and symptoms:
- Intestinal fructose intolerance (Fructose malabsorption)
This type is caused by impaired fructose transport in the small intestine. It is the most common and often causes uncomfortable digestive symptoms but does not put long-term health at risk.
- Hereditary fructose intolerance (HFI)
Less common, this variant is genetic in origin and is due to an enzyme deficiency that prevents fructose from being metabolised properly. It can cause severe damage to organs such as the liver and kidneys if a proper diet is not followed appropriate diet for it.
Although different, many people with fructose intolerance also have difficulty digesting sorbitol, a sugar alcohol found in fruits and low-calorie products. Avoiding this type of sweetener is an essential part of a diet for fructose and lactose intolerance.
What are the symptoms of fructose intolerance?
The symptoms of fructose intolerance vary depending on the type of intolerance and the amount ingested. The most common symptoms include:
- Diarrhoea
- Stomach rumbling
- Headaches
- Constipation
- Flatulence
- Abdominal pain
- Appetite for sweet foods
- Halitosis
In the case of hereditary fructose intolerance, strict adherence to a fructose-free diet is vital, as consumption can cause severe organ damage. In contrast, in the case of fructose malabsorption, the effects are mainly digestive and do not pose a risk to vital organs. Identifying these symptoms in time allows people to adapt their diet and significantly improve well-being and quality of life.
Living with fructose intolerance: Practical Tips
Living a completely fructose-free life is practically impossible, which is why it is important to reduce fructose consumption as much as possible. Frusano's products are specially formulated to make this task easier and are ideal as part of a fructose intolerant diet.
Avoiding the suffering caused by fructose intolerance requires eliminating certain sugars from your diet:
- Fructose: Fructose content varies widely between fruits, vegetables and cereals. Having a table of low-fructose foods is a useful tool for choosing the right products.
- Sorbitol: Many people with fructose intolerance are also sensitive to sorbitol. This sugar polyol is found in many artificially sweetened products, such as "light" or "no sugar added" foods.
Tolerance to fructose varies greatly from person to person. Some people tolerate only 1g a day, while others can ingest up to 50g a day without showing any symptoms. Still, reducing sugar is key in any case.
Despite these restrictions, fruit and vegetables remain essential foods for a balanced diet. This is why it is recommended:
- Say no to high-fructose sweets.
- Choose low-fructose fruits and vegetables to maintain a balanced diet.
Following an adapted diet, such as a diet for fructose and lactose intolerance, significantly improves the quality of life for those living with this condition. To begin with, it is helpful to have a sample fructose and lactose intolerance menu to plan safe and tasty meals:
| Type | Dish |
|---|---|
| Starter | Papaya and avocado salad and grilled salmon |
| Main Course | Bacon wrapped pork tenderloin with parsnip and mashed potatoes |
| Dessert | Crêpes with fruit spread |
Fructans: What they are and why you should avoid them if you have fructose intolerance
In addition to fructose, fructans can trigger similar symptoms in people with fructose malabsorption or FODMAP sensitivity. Fructans are fermentable carbohydrates that are only partially absorbed by the small intestine. As they are not fully digested, they can cause gastrointestinal discomfort.
Where are fructans found?
Foods with fructans include:
- Wheat
- Spelt
- Onion
- Garlic
- Leek
- Artichoke
- Banana
Many of these are foods rich in fructans, and when consumed in large quantities, can cause symptoms such as:
- Flatulence
- Abdominal pain
- Nausea
- Feeling of fullness or bloating
Beware of processed foods
The content of fructans in precooked or processed cereal products is not always clearly indicated. Fructans are not required to be listed as a specific ingredient on labels. However, compounds such as inulin or oligofructose, often added as dietary fibre, are fructans and can cause the same symptoms.
How to reduce fructan intake
A low FODMAP diet, focusing on reducing these fermentable carbohydrates, can be very helpful in alleviating symptoms. If you are looking to avoid fructan foods, it is key to check the list of ingredients and consult reliable sources. Although tables of fructan or FODMAP-containing foods are available, they should be a supplement and not a substitute for medical or nutritional advice.
In the case of severe intolerance, it is advisable to choose fructan-free foods or products specifically labelled as low FODMAP.
What does Frusano offer for people with fructan sensitivities?
Most of our low-fructose products also have a very low fructan content. However, if your tolerance level is very low, we recommend that you always check the nutritional content to ensure that the product meets your needs.
At Frusano we make products for people with multiple intolerances. All our products are sweetened with maltose and dextrose, and we offer a wide range of products including:
- Fructose-free chocolates
- Fructose-free fruit spreads
- Beverages and sweets suitable for intolerant people
- Gluten-free, lactose-free and vegan-friendly alternatives
- Sorbitol-free alternative Sweeteners
Many of our products are low or even completely free of fructose and fructans, allowing you to live a normal life without compromising on taste or quality.
Eat healthy, live well and enjoy your everyday life with Frusano.