Causes of Low Testosterone levels

What causes low testosterone

John P. Cunha, DO, FACOEP
John P. Cunha, DO, FACOEP

John P. Cunha, DO, is a U.S. board-certified Emergency Medicine Physician. Dr. Cunha's educational background includes a BS in Biology from Rutgers, the State University of New Jersey, and a DO from the Kansas City University of Medicine and Biosciences in Kansas City, MO. He completed residency training in Emergency Medicine at Newark Beth Israel Medical Center in Newark, New Jersey.

Low testosterone (Low-T) definition

Testosterone is a hormone required for male development and is produced primarily in the testicles. It is responsible for building muscle and bone mass as well as sperm production and sex drive. It influences male pattern fat distribution, bone density, and red blood cell production.

Lack of or underproduction of testosterone either directly due to decreased production in the testes or indirectly due to lack of stimulation of the testes to produce testosterone by the pituitary gland is called hypogonadism and is a medical condition requiring treatment.

In the normal developing male, testosterone peaks during early adulthood. Once you reach age 30, testosterone levels slowly decline by approximately 1% a year. This is a normal part of aging.

What are the "normal" levels of testosterone in men?

The low limit of testosterone levels in men is about 300 nanograms per deciliter and the upper normal limit is approximately 1000-1200 ng/dl. A low level needs to be investigated further to distinguish it from normal aging.

Some of the conditions that can lead to a low level are:

  • (type 2)
  • Chronic medical conditions (especially liver or kidney disease)
  • Hormonal disorders
  • Infections

What are the symptoms of low testosterone (Low-T)?

It is important to distinguish between a normal decline of testosterone levels and hypogonadism.

Signs and symptoms of low testosterone include:

Although testosterone therapy helps with hypogonadism, whether it helps in the reversal or slowing of normal effects of aging and lower testosterone levels is unclear. Several published research articles have conflicting results and more research is needed to make a final determination about the use of testosterone for healthy aging males.

Viewers share their comments

Low Testosterone (Low T) - Causes Question: What caused your testosterone levels to decrease?

It may be linked to testosterone in men

by bmw_grrl

There is plenty of evidence that testosterone levers are lower in men these days than ever before. BPA and other pollutants are suspect.
I have a neighbor who is an endocrinologist. He said that when estrogen levels are high and testosterone is low in men, they tend to be more effeminate but also more bitchy and moody. Testosterone actually makes men more calm and strong. Too much testosterone causes extreme aggression and other problems.
If people in power are more bitchy and moody, they will start more fights. Bill Clinton had a healthy libido. He was having frequent sex and during his time, we had a relatively peaceful time

Changes from less testosterone

by DigitBox

I'm aware of much of the changes and it wasn't really a shock other than when I shrunk height wise and it kept messing with me that suddenly certain people were taller than me and others were the same height as me when they all didn't used to be.
The problem is when there isn't enough testosterone. There are well documented symptoms of the loss of testosterone in both men and women. Too the point where it causes serious health problems.
Many of which I have encountered. It's not just lowered from male levels that is hurting me, it's too low to maintain good health that is the problem

You might want to consider other things

by bmw_grrl

Try to see if you can get your thyroid, testosterone and estrogen levels tested. All of these hormones affect your mood and they can be easily tested and remedied if necessary. Don't just depend solely on mind altering drugs.
A good portion of men these days are suffering from low testosterone and it causes all sorts of anxiety, depression and lack of libido issues. I am not saying this is your problem but you should check it out just to be sure.
Also consider exercise too but take a class that requires mind body discipline like a yoga or a martial art

Irish Curse

by doctorbanana

The phrase "irish curse" refers to the decrease in penis size that commonly occurs during middle age, due primarily to low levels of testosterone. One of the causes of low testosterone is alcohol consumption, which often takes its toll on hormone production on men as they get older.
As the irish are often stereotyped as being "avid drinkers", the phrase "irish curse" refers to a small penis based on alcohol abuse.

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