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  1. The Dude

    PDE5 - The Elephant in the Room ?

    So we know that cGMP allows an erection to occur, and PDE5 is responsible for turning it off. The fact that PDE5 inhibitors (Cialis,Viagra,Levitra) are a spectacular financial success has two big implications: 1 - everyone who finds that PDE5 inhibitors work - which is roughly two-thirds of...
  2. The Dude

    Treating Cholesterol using nutritional supplements

    Wrong book. The original book is mentioned in the article "The Cholesterol Myths". No supplements being sold, no money being made by him (not "them"). The book has information such as how some studies cited in favor of the cholesterol hypothesis, actually disprove it, but both author and...
  3. The Dude

    Feeling Good

    A couple of things that have done that for me are Krill Oil (I recommend NOW brand) and ALCAR (Acetyl L-Carnitine).
  4. The Dude

    Treating Cholesterol using nutritional supplements

    No one ever died of "excess cholesterol". Lots of people have made millions by selling cholesterol lowering. If you have spare time, read "The Cholesterol Myth".
  5. The Dude

    10mg of Cialis a safe daily dose?

    Long-time lurker. Cialis researchers consider 20mg the maximum occasional dose and 10mg the best dose for those who have health issues of any sort. The approved corresponding daily doses are 5mg or 2.5mg per day. In my own personal experience - and the experience of others mentioned in...
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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