Myths vs facts: Nährstoffcheck and Haut

The myth: A nutrient check (blood or saliva test) can pinpoint deficiencies that cause skin issues like acne, wrinkles, or dryness, and correcting them will dramatically improve skin. The fact: While nutrients like vitamin C, E, zinc, and omega-3s support skin health, the evidence that isolated deficiencies directly cause common skin problems is weak. Most direct-to-consumer nutrient tests lack clinical validation for skin outcomes. A low level does not guarantee that supplementation will improve skin; genetics, environment, and lifestyle play larger roles. Evidence is mostly mechanistic or from small observational studies. Safety note: high-dose supplements (especially fat-soluble vitamins) can be harmful. A balanced diet and consulting a dermatologist for persistent skin concerns is more evidence-based than relying on unvalidated tests.