What are fructooligosaccharides (FOS)
Fructooligosaccharides (FOS) are prebiotic fibers found in many plants, including onion, garlic, asparagus, bananas and artichokes. They are low-calorie carbohydrates that are not digested in the small intestine but travel to the large intestine, where they serve as food for beneficial bacteria.
Health benefits — fructooligosaccharides (FOS)
- Support for digestive health: FOS helps maintain a healthy gut microbiota by promoting the growth of beneficial bacteria such as Bifidobacterium and Lactobacillus. This can help reduce the symptoms of gastrointestinal disorders such as irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD).
- Strengthening the immune system: Prebiotic fibers such as these fibers can improve the immune response by increasing the activity of natural killer (NK) cells and reducing levels of proinflammatory cytokines, thereby reducing inflammation and increasing resistance to infections.
- Weight management and metabolic regulation: Studies have shown that these prebiotic fibers can help reduce body weight and abdominal fat, improve blood glucose levels and reduce insulin levels in people with metabolic syndrome and diabetes. They help regulate lipid metabolism and can reduce obesity-related inflammation.
- Improved mineral absorption: These fibers can improve the absorption of minerals such as calcium and magnesium, which contributes to bone health and helps prevent osteoporosis. These properties are especially beneficial for older people who have a risk of mineral deficiency.
- Support for heart health: These prebiotic fibers can help lower blood cholesterol and triglyceride levels, thereby promoting cardiovascular health. Reducing “bad” (LDL) cholesterol and increasing “good” (HDL) cholesterol can reduce the risk of heart disease.
Potential side effects
Fructooligosaccharides are safe to use, but as with other prebiotics, some people may have mild digestive problems such as bloating, gas or diarrhea, especially if taken in larger doses. These side effects are usually temporary and subside after a few days of regular prebiotic use.
How to use FOS
FOS is naturally found in foods such as onion and garlic, asparagus, bananas and artichokes, and is also available as a dietary supplement in powder or capsule form. It is most often introduced gradually, with sufficient fluids, to avoid transient discomfort such as bloating. As a prebiotic, it works best in combination with probiotics, which it feeds and whose growth it encourages. Before introducing larger doses, it is advisable to consult a doctor or pharmacist.
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