was ist kohlenhydrate — which blood markers matter?

Carbohydrates are macronutrients that serve as the primary energy source, including sugars, starches, and fiber. Key blood markers for assessing carbohydrate metabolism include fasting glucose (snapshot of blood sugar), HbA1c (average glucose over 2–3 months), fasting insulin (indicator of insulin secretion and resistance), and triglycerides (elevated with high carbohydrate intake). Fructosamine can be useful for shorter-term changes. Genetic variants such as TCF7L2 (type 2 diabetes risk) or AMY1 (starch digestion) have small effects and are not considered blood markers themselves. The evidence for standard blood markers is strong (human-strong), whereas single-SNP tests lack clinical validation and are often overhyped. Interpretation should always consider the full clinical picture, not a single value.