What role does Östradiol play in Fruchtbarkeit?

Estradiol, the primary form of estrogen, plays a central role in female fertility. It regulates the menstrual cycle, promotes endometrial growth, and triggers the LH surge that induces ovulation. It also improves cervical mucus quality and supports implantation of the fertilized egg. Both low and high estradiol levels can disrupt the cycle and impair fertility. The evidence for these roles is human-strong, based on decades of clinical research and reproductive medicine practice. However, estradiol is only one factor in a complex hormonal system; fertility also depends on progesterone, LH, FSH, thyroid hormones, and other parameters. Therefore, fertility issues require comprehensive hormonal assessment. Note: Single estradiol self-tests are insufficient to evaluate fertility.