How are Fertility Check and blood sugar related?

A Fertility Check (DNA test) can identify genetic variants linked to blood sugar regulation, such as SLC2A2 (rs5400), MTNR1B (rs10830963), and TCF7L2 (rs7903146). These are associated with fasting glucose levels and gestational diabetes risk. Chronically elevated blood sugar can impair fertility by affecting ovulation, sperm quality, and early embryo development. However, the effect of any single variant is small; lifestyle, diet, and hormonal balance are more influential. The test is not diagnostic—clinical glucose measurements (e.g., HbA1c, OGTT) are more actionable. Evidence: human-moderate (gene-disease associations).