Nelson Vergel

Nelson Vergel

Founder, Excel Male Forum
Author: Books

HCG Reconstitution Calculator- HCG Dosage Calculator

Jun 13

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Even though it is a simple calculation, some men struggle calculating IU and cc doses of HCG. Here is a simple site to help. SCROLL DOWN TO THE BOTTOM OF THE PAGE FOR A SIMPLE CALCULATOR Before we start, why is hCG measured in IU's instead of...

HCG

High Estradiol in Men on TRT: What to Do

Jun 11

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...

Blood Tests Erectile Dysfunction Estradiol estrogen in men Men's Health Testosterone side effects TRT blood tests

Eating More Live Microbes May Boost Testosterone: What a New Study Found

Jun 04

A new study published in Scientific Reports (Nature Publishing Group) has found a potential link between eating foods rich in live microbes—like those found in yogurt, kefir, kimchi, and other fermented foods—and higher testosterone levels in...

Men's Health Nutrition Testosterone

Where to Inject Testosterone: Intramuscular vs. Subcutaneous Injections

Jun 04

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No matter what kind of TRT your doctor has given you, a common question is where to inject testosterone. For decades, most men have injected their testosterone intramuscularly (IM), primarily into the glutes, quadriceps, or deltoids, using a 1 to...

How to Guides Men's Health Testosterone TRT

Testosterone blood level is correlated with immune cell abundance in transgender young people on gender affirming hormones

Jun 03

Sex hormones like estrogen and testosterone don’t just affect things like body shape or voice—they also play a role in how the immune system works. This is especially important for transgender people who take these hormones as part of their...

Blood Tests Health & Wellness Hormones Testosterone Testosterone side effects TRT

Estradiol: The "Other" Male Hormone

May 31

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...

Blood Tests Estradiol Hormones Men's Health Testosterone side effects TRT blood tests

Managing the Testosterone-to-Estradiol Ratio in Men on TRT

May 29

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...

Blood Tests Erectile Dysfunction Estradiol estrogen in men Men's Health Testosterone side effects TRT blood tests

Clomid (Clomiphene) Reduces IGF-1, a measure of Growth Hormone

May 27

Summary of Study Findings: "Reduced IGF-1 Levels Following Clomiphene Treatment for Male Hypogonadism" (Journal of the Endocrine Society, 2025) Objective: To investigate whether clomiphene citrate—a selective estrogen receptor modulator used...

Clomid (Clomiphene & Enclomiphene) Hormones Men's Health Muscle Gain

Oxandrolone (Anavar) : The Most Studied Oral Anabolic Agent in Wasting and Catabolic Conditions

May 20

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Oxandrolone is a man-made anabolic androgenic agent that has been studied by doctors for more than 30 years, mostly because it might help treat catabolic disorders and chronic wasting conditions like alcoholic hepatitis, severe burn injuries...

Anabolic Agents Chronic Illnesses General Health Health & Wellness Hormones Men's Health Muscle Gain Products Women's Health

The TRT Guide from ExcelMale.com

May 17

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...

Blood Tests Erectile Dysfunction Estradiol estrogen in men Fatigue Fertility Health & Wellness Hormones How to Guides Men's Health Muscle Gain Sex drive Testicular Atrophy Testosterone Testosterone side effects TRT TRT blood tests TRT Doctors

Does creatine cause hair loss? : A 12-week randomized controlled trial explains

May 13

Study article link: Does creatine cause hair loss? A 12-week randomized controlled trial - PMC Background and Purpose Creatine is a popular supplement known for enhancing muscle strength and lean mass. Despite its benefits, concerns have...

Hair loss Men's Health Muscle Gain Supplements Testosterone side effects

GLP-1 Medications (Semaglutide, etc.) Decrease Sex Drive

May 07

Study at a Glance Title: “Assessing the Impact of GLP-1 Receptor Agonists on Sexual Desire: A Qualitative Review” Authors: H. Quaile & R. Horwitz Journal: Journal of Sexual Medicine — published 1 April 2025 Why This Matters Glucagon-like...

Health & Wellness Men's Health Sex drive Weight Loss Women's Health

TRT Hormone Predictor Widget

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