hat banane ballaststoffe — can a DNA test help?

Yes, bananas contain fiber, primarily pectin and resistant starch (in green bananas). A ripe banana provides about 2–3 g of fiber per 100 g. However, a DNA test cannot tell you whether a banana has fiber – that is a purely nutritional fact. A genetic test might theoretically offer insights into how your body processes fiber or your gut microbiome composition (e.g., via FUT2 variants), but the evidence is weak and insufficient for concrete dietary advice. The MyBody-X context shows that even for well-studied genes like APOA2 or VDR, effects are small and ancestry-specific. A DNA test cannot replace a direct microbiome or blood analysis. Bottom line: Bananas are a good source of fiber, but a DNA test does not help answer that question. Focus on an overall fiber-rich diet.