sind 2 bananen am tag zu viel — can a DNA test help?

Whether two bananas a day is too much cannot be meaningfully answered by a DNA test. Bananas provide potassium, vitamin B6, fiber, and carbohydrates (sugar). For a healthy adult, two bananas are generally fine – about 30 g of sugar, which fits into a balanced diet. A DNA test may analyze genes like FTO, MC4R, or LEP, which have weak associations with weight and metabolism, but it cannot predict tolerance to a specific amount of bananas. The evidence for nutrigenetic recommendations on specific food quantities is very limited. More relevant factors are total calorie intake, blood sugar control, and kidney function (due to potassium). In cases of kidney disease or insulin resistance, consult a doctor. A DNA test does not provide clinically useful guidance here.