The guidebook · Targeted guide
Fibre and prebiotics: adding them to your meals
A concrete food progression, complementary to the dossier on microbiota and its uncertainties.
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Distinguish the food from the supplement
Fibres are present in many plants and their effects differ according to their nature. A prebiotic corresponds to a substrate used by microorganisms with a health benefit; not all foods rich in fiber should be presented as a treatment of the microbiota.
This guide covers current diet, not the treatment of a digestive disease. In case of intestinal inflammatory disease, surgery, swallowing disorder or prescribed dietary restriction, ask for appropriate advice before significantly changing intakes.
Select a first replacement
You can start by replacing some of the refined starches with a more complete version, adding a portion of vegetables or introducing a small amount of legumes. Keep the foods appreciated and choose an easy-to-repeated modification.
Don't change the whole day. Tastes, budget and preparation time are important for regularity. Natural frozen vegetables or canned rinsed legumes can simplify meals.
Increasing Gradually
A rapid increase can cause bloating and discomfort. Try a modest amount and then adjust according to your tolerance. An embarrassment is not proof of "detoxification" and should not be sought as a sign of success.
Drink regularly according to your needs and instructions received. People with medical water restrictions should not increase their consumption alone. A swelling supplement is not insignificant if hydration or swallowing are difficult.
Compose without calculating each gram
During the week, vary the sources: fruit, vegetables, whole grains, dried vegetables and nuts if you tolerate them. The portions and textures are adapted to age. For young children, whole hard foods can be exposed to choking.
A diversified plate also provides other nutrients. An isolated food or powder does not summarize the food balance. Restrictive strategies to "repair the microbiota" may unnecessarily reduce the variety and require accompaniment when they have an indication.
When to ask for an opinion
Blood in the stools, unintentional weight loss, vomiting or a lasting change in transit should be assessed. Intense abdominal pain with impossibility to emit stool or gas requires urgent assessment.
If discomfort persists despite a mild progression, a doctor or dietician can seek a cause and adjust the intakes. The microbiote dossier explains the limits of tests and complements; the one on transit deals with daily habits.
Sources and further reading
Documentary update: November 5, 2026. General information: The choice of care depends on your situation.
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