was ist stoffwechsel — when to see a doctor?

Metabolism (Stoffwechsel) refers to all biochemical processes that convert food into energy, build cells, and eliminate waste. You should see a doctor if you experience unexplained weight changes, persistent fatigue, extreme hunger or thirst, rapid heartbeat, tremors, or digestive issues. Abnormal results from home tests (e.g., high TSH, blood sugar, or cholesterol) also warrant medical follow-up – home tests are screening tools, not diagnostic. MyBody-X offers DNA, blood, and microbiome tests that may hint at metabolic traits, but clinical interpretation requires a physician. Caution is needed for children, pregnant women, or those with chronic conditions. Evidence for specific 'metabolic types' from genetic tests is often weak (mostly mechanistic or GWAS-based) and insufficient for self-treatment. Always confirm abnormal findings with a doctor and discuss any dietary or supplement changes with a specialist.