Definition
Estrogen is not a single hormone but a family (estradiol, estrone, estriol) with wide-ranging effects on brain, bone, cardiovascular, immune, and reproductive systems across the lifespan.
Why it matters
Estrogen is one of the most consequential and most under-taught hormones in modern medicine. Understanding its scope removes both stigma and simplification.
The Science
Estrogen receptors are found throughout the body and brain. Estradiol modulates mood, cognition, sleep, temperature regulation, cardiovascular function, and bone density. Fluctuations across cycle, pregnancy, and menopause produce predictable symptom patterns.
The NSI Perspective
NSI treats estrogen as a fundamental input to the nervous system across the lifespan — not as a female issue to be minimized.
Clinical Implications
Careful attention to estrogen dynamics is legitimate medicine, particularly in mood, sleep, and cognition complaints during hormonal transitions.
Practical Application
If symptoms shift with your cycle or across life stages, that is biology speaking. Do not settle for having your symptoms explained away.
References
- 1.McEwen BS, Milner TA. Understanding the broad influence of sex hormones and sex differences in the brain. J Neurosci Res. 2017;95(1–2):24–39.