What role does Nährstoffcheck play in sleep?

The MyBody-X Nährstoffcheck measures biomarkers such as magnesium, vitamin D, B vitamins, and iron, all of which are linked to sleep quality. For instance, magnesium deficiency can impair melatonin production and delay sleep onset. Low vitamin D is associated with shorter sleep duration. However, the evidence is mixed: while some studies show clear benefits (e.g., magnesium supplementation in older adults with insomnia), effect sizes are modest and individual responses vary. The test can identify potential deficiencies but does not diagnose sleep disorders. Normal nutrient levels do not guarantee good sleep – lifestyle, stress, and circadian factors play major roles. Interpretation should be cautious, as many markers only provide rough guidance.