The Importance of Estrogen (Estradiol) in Men’s Health

Men are often unaware that estrogen (estradiol) plays a critical role in their day-to-day health.

Estrogen is found in small-but-critical concentrations in men. It needs to be in balance with the rest of your hormones, especially testosterone, for you to feel well.

A man in a long-sleeved white shirt with short hair clutches his fist to his mouth, pondering a difficult idea, possibly the role of estrogen in men.

  1. The Connection Between Low T and Estrogen
  2. Normal Estradiol Levels in Men
    1. Falling Outside the Normal Estradiol Range
  3. Symptoms of Low Estrogen in Men
    1. Treatment for Low Estrogen in Men
  4. Causes of High Estrogen (Estradiol) in Men
  5. Symptoms of High Estrogen (Estradiol) in Men
  6. The Importance of Monitoring and Controlling Your Hormone Levels
    1. Proper Dosage
  7. Beginning Hormone Replacement Therapy

1. The Connection Between Low T and Estrogen

Estrogen levels and testosterone levels are closely related. In fact, one of the primary causes of low estrogen is actually low testosterone.

Men’s bodies produce estradiol, a form of estrogen, as a byproduct the breakdown of testosterone through an enzyme called aromatase. Aromatase is found in estrogen-producing tissue, such as the adrenal glands, the brain, fatty tissue, and even the testicles.

Estradiol is often referred to as E2 and is one hormone in a class of hormones called “Estrogens.” This class includes estradiol, estriol, and estrone, among others.

Estradiol is likely the main estrogen you need to worry about.

The production of estrogen in a male body is a completely normal and necessary process. Estrogen is required for the healthy physiologic functions of your brain and other important organs, including:

  • Erectile function and sex interest
  • Maintenance of bone health
  • Regulation of fat mass vs. lean mass
  • Brain functions
  • Lipid metabolism
  • Skin metabolism

Since the necessary level of estradiol that men require is derived from testosterone, a correlation develops.

If your testosterone is low, your body doesn’t have the raw materials needed create more estradiol. If you have low testosterone, you may have low estrogen (estradiol) too, probably leading to the symptoms of hormone imbalance.

That’s why low testosterone symptoms and low estrogen symptoms often look so similar: they’re occurring at the same time, and it’s hard to determine what’s causing what.

Talk to a TRT expert and get back to feeling the way you're supposed to.
Now serving patients in all Texas cities.

2. Normal Estradiol Levels in Men

Normal total estradiol levels in men are somewhere between 20–55 pg/mL (2.0–5.5 ng/dL) and 10-40 pg/mL (1.0-4.0 ng/dL), depending on whom you ask.

The first range is based on a study of the total estradiol levels of 115 healthy men.

The same study with the same group of men found that free estradiol levels ranged between 0.3–1.3 pg/mL (0.03–0.13 ng/dL).

Keep in mind that these “normal ranges” aren’t exactly agreed upon throughout the medical community.

The truth is, human bodies vary so much that no one can really say for sure, and testing methods have changed over the years, leading to some discrepancy.

2.a. Falling Outside the Normal Estradiol Range

Numbers don’t tell the whole story. If you’re experiencing the symptoms of low estradiol, but your numbers don’t match up, you may still be a candidate for hormone replacement therapy.

Just like testosterone and other hormones, a level is only “low” if you’re experiencing symptoms.

Similarly, there are men who fall outside the range who nevertheless are asymptomatic. It all depends on you and your body.

If you’re experiencing symptoms, you’ll want to get a blood test to see precisely what’s going on. It’s possible your levels won’t fall outside the normal range, which may indicate something else is causing your symptoms.

Talk to a TRT expert and get back to feeling the way you're supposed to.
Now serving patients in all Texas cities.

3. Symptoms of Low Estrogen in Men

Symptoms of low estrogen in men include:

  • Fatigue
  • Anxiety
  • Irritability
  • Depression
  • Forgetfulness
  • Oversleeping or sleeping too often
  • Sexual dysfunction
  • Water retention
  • Bone loss
  • Fat accumulation

Most of these, especially the symptoms related to how you feel on a daily basis, could appear on a list of either low testosterone or low estrogen symptoms. These are simply symptoms of overall hormone imbalance.

To summarize, you can have low testosterone by itself, or low estrogen by itself, but often, they go hand in hand. The symptoms are very similar, which means that it’s almost impossible to determine which hormone is insufficient without proper blood testing.

3.a. Treatment for Low Estrogen in Men

If you were to experience low estrogen along with low testosterone, in addition to prescribing testosterone treatment, we might also prescribe some form of estrogen, usually in the form of a gel or a cream.

Unlike testosterone, we want estrogen to be bioidentical to ensure it works properly.

For men, it is rare to find low estrogen levels unless that person is undergoing some kind of treatment to reduce estradiol directly.

Talk to a TRT expert and get back to feeling the way you're supposed to.
Now serving patients in all Texas cities.

4. Causes of High Estrogen (Estradiol) in Men

In the setting of Testosterone Replacement Therapy (TRT), we are much more likely to deal with increased estradiol levels, called hyperestrogenism.

There are many reasons why your body may be producing too much estrogen. For instance, if you suffer from obesity, your excess fat can actually start producing additional estrogen beyond what your body already produces.

While we occasionally do see elevated estrogen levels prior to starting treatment for Low T, this is most often a problem that arises because of higher testosterone levels achieved as the result of TRT that’s practiced improperly, including the following poor practices:

  • Your hormone levels are not being regularly or carefully measured
  • You’re not receiving an aromatase inhibitor at appropriate levels
  • Your medical provider isn’t extremely careful about his or her methods

In these cases, much of the extra testosterone being introduced into your body can be converted into excess estradiol.

A man in a navy blue t-shirt and jeans sits on a wooden floor with his head between his knees. Estrogen imbalances in men can cause debilitating symptoms.

5. Symptoms of High Estrogen (Estradiol) in Men

Symptoms to watch for include:

  • Erectile dysfunction, loss of libido, infertility, and other types of sexual dysfunction
  • Enlargement of, or development of, breasts
  • Persistent fatigue or lack of energy
  • Mood swings, anxiety, and/or depression
  • Water retention
  • Excessive sweating
  • Insomnia
  • Night sweats
  • High blood pressure
Low Estrogen vs. High Estrogen in Men

Talk to a TRT expert and get back to feeling the way you're supposed to.
Now serving patients in all Texas cities.

6. The Importance of Monitoring and Controlling Your Hormone Levels

Everything we’ve discussed so far leads to this conclusion:

As we begin to raise one level through hormonal replacement therapy, it’s really important to carefully monitor the therapy’s effect on your other hormones.

That’s why frequent screening is part of our therapy process at Testosterone Centers of Texas.

Most often, a medication named Arimidex (anastrazole), an estrogen blocker, is the treatment of choice to help reduce and control estradiol levels. This medication, when used and monitored appropriately, is safe, inexpensive, and very effective.

Once-per-week dosing is typically enough to reduce elevated levels back into the normal range.

Special care should be taken to monitor for side effects of persistent estradiol elevation and flushing, which may occur with the use of Arimidex.

Talk to a TRT expert and get back to feeling the way you're supposed to.
Now serving patients in all Texas cities.

6.a. Proper Dosage

Because both male and female bodies naturally contain both testosterone and estrogen, just in different amounts, your body tolerates the “opposite” hormone rather well.

If you don’t tolerate the hormone well for any reason, we can easily reduce it.

Because we don’t implant or use hormone pellets (which can last up to six months) and instead use injections for testosterone and topicals for estrogen (which last no more than a week for each dose), we can easily titrate the dose to one your body tolerates more effectively.

Your body will react quickly to these adjustments, often in a matter of weeks or a handful of months.

7. Beginning Hormone Replacement Therapy

When you come into our clinic feeling like you have low testosterone, we check all your hormones.

Estrogen levels must be evaluated and managed the right way for Low T treatments to be safe. Ensure that anyone who treats you for low testosterone understands and explains all the known risks associated with therapy.

Being aware of potential issues and having a plan of action that prevents them from becoming problems during therapy will keep you both happy and healthy.

The staff at Testosterone Centers of Texas (TCT) look forward to helping you improve your quality of life.

Schedule a free consultation today.

Talk to a TRT expert and get back to feeling the way you're supposed to.
Now serving patients in all Texas cities.


  • Hidden


(Bill) William J. White, PA-C

(Bill) William J. White, PA-C brings over 20 years of surgical experience to our practice. He is a decorated veteran of the United States Army where he served for nearly 6 years with duty assignments, both here and abroad.   During his military career, Bill was trained as a Certified Surgical Technologist, and following an Honorable Discharge from the Army, he attended Texas Tech University.   He graduated with a Bachelor of Science in Biology and went on to attend PA School at the University of Texas Southwestern Medical Center at Dallas. He spent the first 10 years of his career in Neurosurgery.