The Premier Platform for Education on Testosterone Deficiency (TD)
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Traverse Trial and Prostate Cancer (8-min)
Dr. Morgentaler
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Latest News and a Remarkable New Paper
Dear friends and colleagues, I'm always grateful for the relative peace of the summer season, allowing me to catch my breath from the hectic pace of conferences, lectures, and the urgency of multiple projects and deadlines that occur during the "serious season" of the...
Upcoming Events
Testosterone Therapy and Men’s Health Congress 2025
Testosterone Therapy and Sexual Dysfunction 2026
Our Mission
Our mission is to be the premier platform for education on testosterone deficiency – also called hypogonadism – and its treatment, for both health care professionals and the public.
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Testosterone Deficiency
Testosterone deficiency is a common condition in adult men that can cause a number of bothersome symptoms and impaired health:
Low Libido
One of the most common symptoms is reduced sexual thoughts and desire, called libido.
Erectile Dysfunction
Testosterone deficiency may cause reduced quality of erections, and absence of nighttime or morning erections
Fatigue
One of the most common symptoms is fatigue that is not easily explained. Some men say they feel “depleted.”
Decreased Muscle Strength & Mass
Testosterone plays a key role in supporting muscle mass and strength. Low testosterone levels can result in reduced muscle mass.
Increased Fat
Low testosterone levels are associated with greater fat mass, especially in the abdomen.
Depressed Mood
Some men with low testosterone levels find themselves sad or emotional without good explanation.
Want to learn more about Testosterone Deficiency?
T4L Blog
This is where we address hot topics in the field, research and other testosterone news, as well as provide opinion pieces by Dr. Morgentaler and occasional guest authors.
Latest News and a Remarkable New Paper
Dear friends and colleagues, I'm always grateful for the relative peace of the summer season, allowing me to catch my breath from the hectic pace of conferences, lectures, and the urgency of multiple projects and deadlines that occur during the "serious season" of the...
A Fascinating Time for the Field of Testosterone Therapy
Dear friends and colleagues, What a fascinating time this last year has been for the field of testosterone therapy! But before I get started, I want to mention that it is not too late to register for the annual meeting of the Androgen Society, which will be held, May...
TRAVERSE and Prostate
Welcome to the January 2024 edition of my T4L Education blog. It’s been an exciting several months in the testosterone field, thanks in great part to the series of publications arising from the TRAVERSE trial. In this short video, I discuss the landmark results of the...
Abraham Morgentaler, MD, FACS
T4L Education is the brainchild of Abraham Morgentaler, MD, FACS, a pioneer in the study and treatment of testosterone deficiency since the 1970s.
Dr. Morgentaler is the leading global expert in the area of testosterone and prostate cancer.