What role does Nährstoffcheck play in Müdigkeit?

The nutrient check (e.g., in the Fitness | LifestyleCheck) measures biomarkers such as vitamin B12, vitamin D3, ferritin, magnesium, and others directly linked to energy metabolism and fatigue. Deficiencies in B12 or D3 are well-documented contributors to fatigue, as is low ferritin indicating iron deficiency. However, a single finger-stick test is not a substitute for clinical diagnostics—it can only provide hints. The evidence for these nutrients' role in fatigue is strong (human studies), but the test's limitations include lack of clinical context and potential variability. Factors like sleep, stress, thyroid function, and mental health also play major roles. The check can be a useful screening tool, but abnormal results should be followed up with a physician.