Low Testosterone (Low T) Treatments

Testosterone is a hormone that is necessary for proper muscular development and masculinity.

What Is Testosterone?

Testosterone is a hormone that is necessary for proper muscular development and masculinity. Testosterone is made in the testes (testicles). Women also have testosterone, but in much smaller amounts than in men. If testosterone levels are below normal, a doctor may prescribe one of several types of treatments. However, there is debate about who needs to be treated.

What Does Testosterone Do?

  • Fuels the sex drive
  • Adds muscle mass
  • Regulates mood
  • Regulates bone strength
Testosterone levels decrease as men age. This is a natural consequence of aging and the process happens gradually.

Testosterone and Aging

Testosterone levels decrease as men age. This is a natural consequence of aging and the process happens gradually. Many men do not show any symptoms of decreasing levels of testosterone.

For men who do show symptoms of decreased testosterone as they age, this age-related low testosterone may be called "male andropause" or "Symptomatic Late-Onset Hypogonadism (SLOH)." Symptoms of SLOH may not be caused by low testosterone, but additional research is needed.

Symptoms of Male Andropause (SLOH)

Symptoms of Male Andropause (SLOH)

Although sometimes called 'male menopause,' the natural decrease in testosterone experienced later in life by men is very different from the relatively sudden change in hormones experienced during female menopause.

How Low Testosterone Can Change the Male Body

Body Changes Caused by Low Testosterone

How Low Testosterone Can Change the Male Body

  • Less muscle mass (atrophy of muscles)
  • Obesity
  • Loss of body hair
  • Smaller testicles
  • Softer testicles
  • Larger breasts
Although osteoporosis (brittle bone disease) is usually thought of as occurring mainly in women, the disease in men is commonly caused by low testosterone.

Low Testosterone Affects Bones

Although osteoporosis (brittle bone disease) is usually thought of as occurring mainly in women, the disease in men is commonly caused by low testosterone. Low testosterone levels can cause bones to thin, weaken, and become more likely to fracture.

Low testosterone doesn't always interfere with sex, but it is possible.

Low Testosterone and Sex

Low testosterone doesn't always interfere with sex, but it is possible. Some men with low testosterone may experience a drop in libido while others lose interest in sex completely. Low testosterone levels can make sex more difficult because it may be tougher to get or keep an erection. Low testosterone might not be the sole cause of low libido; stress, sleep deprivation, depression, and chronic medical illnesses can also alter a man's sex drive.

An illustration of brain anatomy, low testosterone affects mood and thinking.

Testosterone, Mood, and Thinking

Some of the changes that may occur with low testosterone are nonspecific symptoms such as easy irritability, mood changes, poor concentration, and feeling fatigued or having less energy. However, these symptoms may be caused by a condition other than low testosterone.

Other Health Problems That Mirror Low T Symptoms

  • Anemia
  • Sleep apnea
  • Depression
  • Other chronic illnesses
A human sperm, low testosterone affects fertility.

Low Testosterone and Infertility

One of the many functions of testosterone is to help produce sperm. When testosterone levels are low, the "sperm count" can also be low. If the sperm count is very low, the man may not be able to father a child.

A man performing a blood glucose test, diabetes can cause low testosterone.

What Causes Low Testosterone?

Although increased age is the most common cause of decreased testosterone levels in men, there can be other causes. Other common causes include:

An older male at a doctor’s appointment getting tested for low testosterone.

Should You Be Tested For Low Testosterone?

You might need to be tested for low testosterone if you have erectile dysfunction (ED), a very low sex drive, low sperm count, loss of body hair, decrease of muscle mass, and osteoporosis. Conditions other than low testosterone could be the underlying cause of one's symptoms. A doctor will want to rule out other conditions before diagnosing and treating low testosterone.

A chart of daily testosterone levels.

Low Testosterone Testing

Tests for testosterone levels are done by sampling the blood early in the morning when levels of testosterone are highest. Your doctor may want to run a second test a few days later to check for consistency in testosterone levels measured. Normal testosterone levels range from about 300 to 1000 nanograms per deciliter (ng/dL), although some labs consider 200 ng/dL the cutoff for low testosterone. Your doctor will help interpret the tests for you.

A doctor holding a tablet computer.

Low Testosterone Treatment

If you are diagnosed with low testosterone, your primary care doctor may suggest you see a specialist such as an urologist or an endocrinologist. Not everyone with low testosterone will need or qualify for treatment. These specialists will help guide your treatment and design an approach to your low testosterone problem that is best for you.

A man with low testosterone lifting weights.

Low Testosterone Treatment: Testosterone Replacement Therapy

Low testosterone treatment is designed to boost testosterone levels. Studies suggest this increase in testosterone can strengthen muscles, protect bones, and improve sex drive. Testosterone replacement therapy is only recommended for men who have blood levels that show low testosterone. Such treatments can have different effects from one man to another so it is difficult to predict the treatment outcomes for any one individual.

Methods of Testosterone Delivery

  • Intramuscular shots
  • Topical gels and patches
  • Buccal patches
  • Implanted pellets
An injection syringe, treatment for low testosterone.

Low Testosterone Treatment: Testosterone Injections

Testosterone injections are the least expensive form of testosterone treatment, but they can be painful. The shots are given about every 7 to 22 days and the body slowly absorbs the testosterone into the bloodstream. Injections can be given into the muscles or implanted as pellets. Testosterone levels can increase and then fall between shots.

A packet of testosterone gel, low testosterone treatment.

Low Testosterone Treatment: Testosterone Gels or Patches

Gel or patch treatments for low testosterone are placed directly on the skin. The hormone seeps out of the patch or gel and goes through the skin, and is slowly absorbed into the blood. Gels and patches are applied every day, and as a result, the level of testosterone remains fairly steady. A drawback to these treatments is they sometimes can cause itching, skin irritation, and blisters. In addition, women or children should not come in contact with skin that has been treated with a gel for 2 hours to avoid absorbing any testosterone.

Buccal patches are used to treat low testosterone among other conditions.

Low Testosterone Treatment: Buccal Patches

Buccal patches are placed on the gums above the incisors (teeth) about every 12 hours and slowly release testosterone. They are not effective if swallowed. Buccal patches may cause a bitter taste, irritation to mouth tissues and gums, and may cause headaches. Fortunately, these side effects lessen over time. The patient can eat, drink, and kiss others while using buccal patches because they are not directly exposed to testosterone.

An illustration of red blood cells.

Low Testosterone Treatment: Risks of Testosterone Therapy

Although testosterone therapy has been tried in many individuals, the risks and benefits of this treatment over many years is still not known because such studies are still underway. Testosterone should not be given to men with untreated prostate cancer, untreated sleep apnea, or untreated breast cancer. In some men, testosterone therapy may need to be stopped if the risks outweigh the benefits.

Side Effects of Testosterone Treatment

  • Enlarged prostate
  • Acne
  • Too many red blood cells
  • Swelling of the feet or ankles
  • Infertility
  • Smaller testicles
  • Breast swelling or soreness


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  • American Urological Association: "Evaluation and Management of Testosterone Deficiency (2018)." 2018.
  • Mayo Clinic: "Male menopause: Myth or reality?" Jun. 20, 2020.
  • Hormone.org: "What Does Testosterone Do"
  • Medscape: "Low Testosterone"
  • Urology Care Foundation: "Testosterone Replacement Therapy (TRT)"
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