Estradiol (E2) is a key form of estrogen that naturally fluctuates throughout life, with levels changing across puberty, reproductive years, perimenopause, and menopause. It plays an essential role in bone health, cardiovascular function, reproductive health, and overall hormonal balance, making proper interpretation of lab values important in clinical context rather than in isolation.
According to Dr. Randy Gould, estradiol levels shift significantly during major life stages and should be understood in context of normal physiology. Dr. Gould explains that “estradiol increases during pregnancy due to the placenta producing large amounts of estradiol,” and notes that these changes support fetal development, uterine blood flow, and preparation for breastfeeding. Read full article here.
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