wieviel bananen am tag sind gesund — what are common causes?

The question about how many bananas per day are healthy is well-supported by nutritional science: for healthy adults, 1–2 bananas daily provide potassium, vitamin B6, and fiber without adverse effects. Individuals with kidney disease or potassium restrictions should limit intake. The second part of your question – 'what are common causes?' – is ambiguous without context. It might refer to causes of digestive issues from bananas (e.g., unripe bananas can cause bloating) or causes of elevated potassium. The provided contexts (AMH, gut health, TRH, PCSK9) contain no information about bananas. Therefore, the answer remains general and evidence-based: bananas are a healthy fruit but not a cure-all; a balanced diet is key. The evidence for the recommended amount is strong (human-strong), but for 'common causes' it is unclear due to lack of context.