sind bananen ballaststoffreich — what are common causes?

Bananas contain about 2.6 g of fiber per 100 g, which is moderate. They are not extremely high in fiber but are a decent source, especially when green (resistant starch). The phrase 'what are common causes' is ambiguous without context. It might refer to causes of low fiber intake, such as a diet low in whole grains, legumes, fruits, and vegetables, or to digestive issues from eating too many unripe bananas. Without a clear subject, I can only provide general information. MyBody-X tests do not directly measure fiber intake but may assess it via dietary questionnaires. The evidence for banana fiber content is well-established, but the question about causes remains unclear.