We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission Here’s our process.
Healthline only shows you brands and products that we stand behind.Our team thoroughly researches and evaluates the recommendations we make on our site. To establish that the product manufacturers addressed safety and efficacy standards, we:
- Evaluate ingredients and composition: Do they have the potential to cause harm?
- Fact-check all health claims: Do they align with the current body of scientific evidence?
- Assess the brand: Does it operate with integrity and adhere to industry best practices?
Males may experience low testosterone as they get older or due to some health conditions. Symptoms can be subtle, but treatment may help if the symptoms affect your lifestyle.
Alternative names for low testosterone
People may also refer to low testosterone as:
- low T
- male menopause
- testosterone deficiency
Testosterone is a hormone that can affect appearance and sexual development, stimulate sperm production and sex drive, and help build muscle and bone mass. It is typically produced by the testicles in people assigned male at birth.
Who can have low testosterone?
While people assigned male at both and people assigned female at birth produce testosterone, this article focuses on symptoms of low testosterone in people who were assigned male at birth.
Though sex and gender exist on a spectrum, the studies and surveys below used the terms “male” and “men” and did not report data on, or include, participants who were transgender, nonbinary, gender nonconforming, genderqueer, agender, or genderless.
To maintain the specificity and accuracy of the research, this article will use the terms “male” and “men” throughout.
Testosterone production typically decreases with age. According to the American Urological Association, about 40% of males ages 45 and older have low testosterone.
If your testosterone production drastically drops, you may experience a range of symptoms. Signs of low testosterone are often subtle and can include:
Low sex drive
Testosterone plays a key role in your sex drive or libido. Some people may experience a decline in sex drive as they get older, but those with low testosterone will likely experience a more drastic drop.
Difficulty achieving and maintaining an erection
Testosterone aids in achieving and maintaining an erection. It tells brain receptors to produce nitric oxide, which is a molecule that helps trigger a series of chemical reactions to produce an erection.
With low T, you may have difficulty achieving an erection before sex or having spontaneous erections, such as during sleep.
However, research is inconclusive on whether testosterone replacement therapy can successfully treat erectile dysfunction. A 2016 review of studies looked at this therapy in males with erection difficulties and
Other health conditions can cause erectile difficulties. These include:
Smoking and alcohol use can also contribute.
Hot flashes can be a sign of low testosterone. This can feel like a sudden sensation of warmth. You may also experience:
- heavy sweating
- reddening of the skin
- night sweats
Testosterone plays a role in hair production. Balding is a natural part of growing older for many males, and while it can be hereditary, those with low testosterone may lose body and facial hair as well.
Males with low testosterone may report extreme fatigue and decreased energy. You may have low T if you’re consistently tired despite getting plenty of sleep or if you find it harder to get motivated to exercise.
Decreased muscle mass
Increased body fat
Low testosterone levels may cause increased body fat or gynecomastia, which is enlarged breast tissue. Gynecomastia can occur when there is an imbalance of testosterone and estrogen in the body.
Decreased bone mass
Osteoporosis is a condition that affects bone density. Testosterone helps produce and strengthen bone, so males with low testosterone, especially older men, may have lower bone volume and be more susceptible to bone fractures.
Males with low testosterone can experience mood changes. Since testosterone influences many of the body’s physical processes, it can also influence mood and mental capacity.
Both testosterone levels and cognitive functions, particularly memory, decline with age. As a result, doctors have theorized that lower testosterone levels could contribute to affected memory.
According to a
Smaller testicle and penis size
The body requires testosterone to develop the penis and testicles, so low testosterone levels could contribute to a disproportionately smaller penis or testicles. Other conditions and circumstances can cause a smaller penis and testicles, as well.
Low blood counts
Low testosterone may increase your risk for anemia, according to a
Testosterone levels naturally decrease as males get older, but other conditions or circumstances may also cause low testosterone. These may include:
- testicle injuries
- cancer treatments, such as chemotherapy and radiation
- alcohol use disorder
- kidney disease
- cirrhosis of the liver
- pituitary gland conditions
- autoimmune disease
- metabolic syndrome
- using certain medications
Testosterone levels are typically
Other tests may be performed to determine the cause of low testosterone.
Tests to diagnose low testosterone and its causes include:
- serum testosterone
- luteinizing hormone
- blood prolactin level
Testosterone replacement therapy is a common treatment for low testosterone.
If low testosterone symptoms are bothering you, you can talk with a doctor to determine if testosterone replacement therapy is right for you.
Testosterone replacement therapy is a lifelong treatment. If you stop treatment, your testosterone levels will drop.
Side effects can include:
- enlarged prostate
- shrinking testicles
- decreased sperm count
- high red blood cell count
- fluid retention
- swollen feet or ankles
This therapy may not be right for you if you:
- have an untreated heart condition
- have breast or prostate cancer
- have sleep apnea
- have elevated red blood cell counts
- plan to have children
Having low testosterone may increase your risk of developing other health conditions, which may require treatment.
Males experience a gradual decrease in testosterone as they get older. The older you are, the more likely that you’ll have low testosterone.
A variety of factors can cause low testosterone. A doctor can check your testosterone level with a simple blood test.
If you have low testosterone and the symptoms bother you, a doctor may recommend testosterone replacement therapy.
If you would like to know your testosterone levels, LetsGetChecked offers male hormone tests at home at various price points.