Nelson Vergel

Nelson Vergel

Founder, Excel Male Forum
Author: Books

Gynecomastia: Causes, Types, and Treatments.

Feb 20

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What is Gynecomastia and How to Diagnose it Gynecomastia is a benign enlargement of the male breast resulting from a growth of the glandular tissue of the breast, known as male breast tissue. It is defined clinically by the presence of a...

Estradiol estrogen in men Testosterone side effects

Video Lecture: hCG Use in Men- Review of Studies by Nelson Vergel

Feb 19

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Nelson Vergel, co-founder of ClinicOptimizers.com, founder of ExcelMale.com and DiscountedLabs.com, and author of the book "Testosterone: A Man's Guide", reviews current data on the use of human chorionic gonadotropin (hCG) in men to...

Fertility HCG Health & Wellness Hormones Sex drive

Pregnenolone and Progesterone for Men: Pharmacokinetics and Studies

Feb 12

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Pharmacology of pregnenolone and progesterone: "Oral administration of 50 or 100 mg pregnenolone has been found to have minimal or negligible effect on urinary levels of testosterone and testosterone metabolites, including of androsterone...

Health & Wellness Hormones

US Federal and State Regulations on Testosterone and HCG

Feb 06

Table of Contents Testosterone is a controlled substance in the US, specifically a Schedule-III controlled substance (in all but one State), and this includes any form of testosterone including injectable, transdermal, patches, pellets, and...

Testosterone

FDA-Approved Oral Testosterone: Jatenzo (Testosterone Undecanoate)

Feb 06

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The U.S. Food and Drug Administration today approved Jatenzo (testosterone undecanoate), an oral testosterone capsule to treat men with certain forms of hypogonadism. These men have low testosterone levels due to specific medical conditions, such...

Testosterone TRT

Hypothyroidism: Facts, Interactions and Resources

Feb 05

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Hypothyroidism and Hyperthyroidism Hypothyroidism and hyperthyroidism are two common thyroid disorders that can be detected through thyroid function tests. Hypothyroidism: Hypothyroidism occurs when the thyroid gland does not produce enough...

General Health Hormones

Effect of Estradiol on Men's Libido

Feb 02

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Table of Contents Video: Increased Estradiol Improved Sex Drive in Men Estradiol in Men: Background Sex Steroids and the Male Libido Effect of Testosterone and Estradiol on Men's Libido: Low Estradiol and Fat Gain: Surprising Results High...

Estradiol estrogen in men

Nandrolone (Deca Durabolin) Studies in Humans

Jan 30

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A Randomized, Placebo-Controlled Trial of Nandrolone Decanoate in Human Immunodeficiency Virus-Infected Men with Mild to Moderate Weight Loss with Recombinant Human Growth Hormone as Active Reference Treatment . by Storer, Thomas W; Woodhouse...

Hormones

What is a Normal Blood Level of Testosterone? What Do Guidelines Say?

Jan 30

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Normal values may vary from lab to lab depending on what reference range they use. Depending on the country, ranges are in nanograms per deciliter (usually in the United States) or nanomoles per liter (Europe and other countries). The conversion...

Testosterone

Most Testosterone Booster Reviews on Amazon are Fake

Jan 28

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Testosterone Imposters: An Analysis of Popular Online Testosterone Boosting Supplements Abstract Introduction Testosterone-boosting supplements (T-Boosters) are prominently featured on Amazon.com, with numerous dedicated pages and claims that...

Supplements Testosterone

Sex Hormone Binding Globulin (SHBG): Is It Good or Bad?

Jan 24

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Table of Contents SHBG and the Free Testosterone Relationship What Causes High SHBG? Other factors that can contribute to high SHBG include: Get Your Levels Checked: SHBG Test, Free & Total Testosterone Test How to Lower SHBG Levels: Very Low...

Blood Tests Hormones

How to Predict Estradiol and DHT at Different Testosterone Doses

Jan 24

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I was able to come up with a table using the predictive model equation derived from data in this study: The Effects of Injected Testosterone Dose and Age on the Conversion of Testosterone to Estradiol and Dihydrotestosterone in Young and Older...

Blood Tests Estradiol Testosterone side effects TRT TRT blood tests

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