Evidence check: Nährstoffcheck in the context of Fruchtbarkeit

A nutrient check in the context of fertility can be useful, as certain micronutrients such as folate, vitamin D, zinc, selenium, and omega-3 fatty acids have established roles in reproduction. However, the evidence for a broad, non-targeted nutrient check is limited. Many tests measure only serum levels or genetic variants that do not always reflect actual needs or bioavailability. For example, low vitamin D levels have been associated with fertility issues, but causality is not firmly established (PMID 25664836). Reference ranges also vary by laboratory and population. A nutrient check should therefore not be considered a standalone diagnostic tool but rather a screening aid that must be interpreted alongside clinical evaluation and a comprehensive history. The risk of misinterpretation is high, especially with home tests lacking medical supervision. In summary, a nutrient check can provide clues but does not replace professional fertility assessment. The evidence is moderate and highly dependent on the specific nutrient.