welche supplements brauche ich test — what can you do yourself?

The question of which supplements you need is complex and cannot be answered by a home test alone. MyBody-X tests (metabolic, DNA, microbiome) often lack clinical validation for supplement recommendations. Evidence: marketing/unclear. What you can do yourself: Keep a food diary to spot patterns, get a blood test from your doctor for key nutrients (vitamin D, B12, iron, etc.), and focus on a balanced whole-food diet. For athletes or specific conditions, targeted supplementation (e.g., omega-3, magnesium, vitamin D) may help, but only after confirming a deficiency. DNA-based supplement advice is not yet robust. Avoid self-prescribing high doses without medical guidance. The best 'test' is a healthy lifestyle combined with professional lab work when needed.