studies

  1. G

    Applying Critical Thinking to Longevity Research: Video from Chris Masterjohn

    The linked video has IMO a lot of great points that everyone who follows the developments in this area should be aware of. It's very relevant for the IMO over-rated concept of calorie restriction and the anti-Growth Hormone arguments, and lots of other topics as well:
  2. R

    Latest Anti-TRT hype before study results are even released

    Touted as the "latest in the medical saga that started 15 years ago when testosterone which for decades had been used mainly in rare clinical circumstances, increasingly is prescribed for middle-aged and older men whose testosterone levels decline" MedPageToday "reports"...
  3. C

    Any studies that show that HCG improves libido ? How do I get a HCG prescription?

    Hi, I recently had an operation for a craniopharyngioma, a benign brain tumor. It was located near the pituitary gland so after the operation my pituitary gland was damaged so that it doesn't produce any hormones anymore. I now take all the hormones in pill-form, and use androgel to raise my...
  4. Nelson Vergel

    Many Clinical Trial Results Are Never Published

    We only get to see what pharmaceutical companies want us to see. Hardly any negative data is published. "A new analysis of 585 large, randomized clinical trials registered with ClinicalTrials.gov finds that 29 percent have not been published in scientific journals. In addition, nearly 78...
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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