was ist stoffwechsel — what symptoms are typical?

Metabolism refers to all biochemical processes that convert food into energy and build cellular components. Typical symptoms of a metabolic imbalance include fatigue, unexplained weight changes, cravings, digestive issues, cold intolerance, and brain fog. However, these are non-specific and can stem from many causes. While genetic tests (e.g., MTHFR) are sometimes marketed for metabolic insights, they do not diagnose current metabolic health. Blood biomarkers (fasting glucose, HbA1c, TSH, homocysteine) are more actionable. The provided context lacks direct evidence on general metabolism symptoms. Evidence rating: unclear. Caution: single gene variants have small effect sizes and should not be overinterpreted.