How are Östradiol and Fruchtbarkeit related?

Estradiol, the primary form of estrogen, is central to female fertility. It regulates the menstrual cycle, thickens the endometrium, triggers ovulation, and supports oocyte quality. Balanced estradiol levels are essential for conception; low levels may indicate diminished ovarian reserve or menopause, while high levels can be linked to conditions like endometriosis or PCOS. However, the provided context does not contain any specific information on estradiol and fertility. The evidence for this answer is based on established endocrinology, not on the given snippets. Caveat: Hormonal assessments require clinical interpretation and should not be based solely on consumer tests.