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Symptoms of Low T — 7 Common Symptoms of Low Testosterone in Men

The symptoms of Low T can be debilitating — many men who suffer from Low T believe they’re only experiencing the normal effects of aging, but many people don’t even know what the normal effects of aging actually are.

Symptoms of Low T, including fatigue

The truth is, the symptoms of low testosterone are quite well defined, and they differ from aging in a variety of ways.

(The symptoms of low testosterone for women are actually a little different — you can read more about the symptoms of Low T in women here.)

Let’s go over 10 common symptoms.

1. Fatigue

Fatigue simply means feeling tired when you shouldn’t. If you’re getting enough sleep, if you’re not overworked, if you’re not physically drained every day, and yet you still wake up tired, then you may be suffering from fatigue.

2. Decreased Muscle and Increased Fat

This is one of the most visible symptoms of Low T. If you’re not getting the results you’re looking for in the gym (despite working out and eating as you should), and if you seem to be gaining fat (without changing your eating habits), it could be low testosterone. This can be very hard to reverse as additional fat can start to produce more estrogen in your body.

3. Erectile Dysfunction

The inability to achieve an erection, combined with other symptoms, may indicate low testosterone. Erectile dysfunction doesn’t always mean low testosterone though, so make sure you make an appointment with a medical provider, one who is familiar with the symptoms of low testosterone and the causes of erectile dysfunction, before moving forward with treatment.

4. Needing to Shave Less and/or Decreased Body Hair

If you’ve noticed that you don’t need to shave as much as you once did, you may be suffering from low testosterone. Testosterone is directly related to facial hair and body hair, so keep an eye out for changes in your shaving schedule.

5. Decreased Sex Drive/Libido

This is different from erectile dysfunction. Erectile dysfunction means you are unable to achieve an erection despite being interested in and ready for sex. Decreased libido, on the other hand, means your desire has decreased, independent of your ability to achieve an erection.

That being said, erectile dysfunction can be a symptom of low testosterone.

6.Loss of Height

Though fairly simple to detect, this may not be something you’ve thought to check. The next time you go to your primary care physician, ask them to measure you.

(You can usually get your testosterone levels tested fairly cheaply — learn more about our $25 Low T Test here.)

7. Infertility

Like erectile dysfunction (and all the symptoms of Low T), infertility alone is not an indicator of low testosterone, but it often goes along with low testosterone. Unfortunately, testosterone replacement therapy often makes infertility issues worse, so while it may be a good indicator of Low T, additional treatment may be necessary to restore fertility.

On the other hand, if you’re at a point in your life where having a child is off the table, you may be perfectly fine with this side effect!

Download Our eBook What Are the Symptoms of Low T? to Learn More About 3 Additional Mental Symptoms

To learn more about some of the mental symptoms of Low T, download our ebook, What Are the Symptoms of Low T?

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(Augie) Juan Augustine Galindo Jr. MPAS, PA-C

(Augie) Juan Augustine Galindo Jr. MPAS, PA-C started his career in healthcare as a fireman/paramedic in West Texas where he served on the Midland Fire Department from 1998-2004.   He became interested in testosterone treatment after seeing how hormone replacement doctors helped those suffering from low testosterone.   After graduating from the Texas Tech Health Sciences Center Physician Assistant Program, he moved to DFW where he currently lives with his wife and three children.


  1. Robert B hobson on 10/17/2016 at 11:10 am

    What is a good target # for estradiol levels while on yet?

    • Augie Galindo on 10/20/2016 at 3:46 pm


      Unfortunately, this answer can go many different directions. Generally, you want them normal, and not causing symptoms like fluid retention, mood swings, hot flashes, bone demineralization, and gynecomastia. The target level varies depending upon individual symptoms/response.

      Best regards,
      Augie Galindo MPAS, PA-C
      Testosterone Centers of Texas | Founding Partner

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