Starting testosterone next week. What should I expect? Nelson, I know you wrote the book "Testosterone: A Man's Guide". I was diagnosed with low testosterone and do not know if I should do injections or gels. Also, what should I expect when it...
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How long does testosterone take to show effects? Testosterone Replacement Treatment Options Flawed Testosterone Studies Fuel Concerns and Lawsuits How should doctors monitor men receiving testosterone replacement therapy...
By Nelson Vergel, BsChE, MBA Testosterone is the precursor hormone for estradiol. Estradiol is a hormone more abundant in women than men that is produced by the aromatization of testosterone in liver, fat and other cells. Nature created it...
In my work collecting information for ExcelMale.com, I review abstracts daily on latest studies related to testosterone, men's health, nutrition, and more. I am always looking for studies that stand out and are no just repetitions of what we...
NELSON VERGEL (NV): I’m very happy to have Dr. Michael Scally join us for this interview. He’s a well-known expert on men’s health in general, and specifically on hormone therapy and issues surrounding testosterone replacement. Dr. Scally, why...
Nelson Vergel: I'm very happy to have Shaun Noorian, the owner and manager of Empower Rx Pharmacyin Houston. He's a member of ExcelMale.com, and answers a lot of questions there. He’s also a member of our ******** group called...
How to Increase Testosterone Naturally By Nelson Vergel Author Testosterone: A Man's Guide There are several life style, nutritional and other factors that can increase testosterone production by testicles in men. The degree of this increase...
Nelson Vergel, author of Testosterone: A Man's Guide (amazon.com) provides an overview of the latest developments on men's health including testosterone replacement, exercise, nutrition and other health issues...
This short video will describe how to use ExcelMale.com for fastest results in improving your health knowledge, find progressive doctors, compounding pharmacies, products and services related to testosterone and other hormone replacement...
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.
