was ist kohlenhydrate — can a microbiome test help?

Carbohydrates are macronutrients ranging from simple sugars to complex starches and fiber. They provide energy, especially for the brain and muscles. A microbiome test (stool analysis) can reveal the relative abundance of bacteria that ferment carbohydrates. Dietary fiber is converted by gut microbes into short-chain fatty acids, which may reduce inflammation and improve insulin sensitivity. However, the evidence that direct-to-consumer microbiome tests can guide personalized carbohydrate recommendations is weak. Most findings are correlational, not causal, and no large RCT has shown that acting on microbiome data improves health outcomes. Such tests cannot diagnose conditions or replace professional dietary advice. Current guidelines (e.g., DGE, WHO) recommend 45–60 % of energy from carbohydrates, emphasizing whole grains, fruits, and vegetables. For optimizing carbohydrate metabolism, proven lifestyle habits—balanced diet, physical activity, and sleep—are far more impactful than any consumer test.