Estradiol

Learn Quickly About Testosterone Deficiency and Its Treatments
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I hope you enjoy this part 1. Yes, it is almost 2 hours long but I concentrated everything I know so that you do not have to read for hours. What is low testosterone (hypogonadism) and how is it diagnosed? Low testosterone, or hypogonadism...
What Really Happened at the FDA Menopause Panel
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The FDA finally held a hearing on menopause—and it was long overdue. Georgie Kovacs breaks down the powerful expert testimony, the systemic failures, and why this matters for every woman navigating midlife care. In this grounded recap, you’ll...
Testosterone/Estradiol Ratio: The Hidden Key to Low Libido in Men with Sexual Dysfunction?
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Poster 149: Testosterone/Estradiol Ratio and Low Libido in Men with Sexual Dysfunction Title TESTOSTERONE: ESTRADIOL RATIO A STEP FORWARD TOWARDS THE UNDERSTANDING OF LOW LIBIDO IN MEN WITH SEXUAL DYSFUNCTION Authors Rodrigo Freddi, Rubens...
Metabolic benefits afforded by estradiol and testosterone in both sexes
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As we very well know T s metabolites estradiol and DHT are needed in order to reap full beneficial effects of testosterone. Ts metabolites estradiol and DHT are needed in healthy amounts to experience the full spectrum of testosterones...
The hormonal regulation of men’s sexual desire, arousal, and penile erection
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Briefing Document: Hormonal Regulation of Male Sexual Desire, Arousal, and Penile Erection Source Rastrelli, G., Antonio, L., Carrier, S., Isidori, A., & Maggi, M. (2025). The hormonal regulation of men’s sexual desire, arousal, and penile...

Anastrozole - Enduring Side Effects 5 Years Later

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Hello all, I’m 28yo male in the US. When I was in my early 20s, I had a residual puffy nipple from puberty. I was very self conscious about this, being pretty deep in weight lifting, and my primary care physician prescribed an anti-estrogen...
High Estradiol in Men on TRT: What to Do
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Briefing Document: Estradiol in Men on TRT Source: Excerpts from "High Estradiol in Men on TRT: What to Do" by Nelson Viegel (excelmale.com) 1. The Role and Importance of Estradiol in Men Core Idea: Estradiol, often misconstrued as a solely...
Estradiol: The "Other" Male Hormone
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Download slides (from my book "Beyond Testosterone"): Estradiol in Men Slides Estradiol in Men: The Stigma In the 2014 film The Other Woman, Cameron Diaz, Leslie Mann, and Kate Upton, portray three jilted females who discover they are...
Managing the Testosterone-to-Estradiol Ratio in Men on TRT
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Managing the Testosterone-to-Estradiol Ratio in Men on TRT Introduction Testosterone replacement therapy (TRT) in hypogonadal men often leads to an increase in estradiol (E2) levels due to the aromatization of testosterone. This alters the...
The TRT Guide from ExcelMale.com
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Understanding the Symptoms, Diagnosis, and Treatment of Hypogonadism in Men Hypogonadism, a condition characterized by low testosterone levels, can significantly impact a man's quality of life. ExcelMale.com offers a comprehensive guide to help...
Controversies with Testosterone Replacement Therapy: Lecture by Dr Khera
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As usual Nelson's Excel is where it's at! Mohit Khera, MD, MBA, MPH, Professor of Urology, F Brantley Scott Chair in Urology, Medical Director of the Laboratory for Andrology Research, Medical Director for the Scott Department of Urology...
Estradiol in Men on TRT: Surprising Results of a Groundbreaking Study
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For more details on this study, click: https://www.excelmale.com/forum/threads/higher-estradiol-t-and-dht-correlated-to-higher-libido-in-older-hypogonadal-men-than-t-alone.24831/ Debunking Myths About Estradiol and Testosterone Therapy...
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TRT Hormone Predictor Widget

TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

Predicted Hormone Levels

Enter your total testosterone value to see predictions

Results will appear here after calculation

Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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