Hormone Health
Low Testosterone and Men's Sexual Health: The Link
September 2024 · 6 min read · Medically reviewed by Dr. Jose Diaz, MD, Medical Director · Reviewed October 14, 2026 · Updated September 30, 2026
Low testosterone can lower a man's sex drive and contribute to erection problems, but it's only one possible cause. Erectile dysfunction is also linked to diabetes, heart and blood vessel disease, high blood pressure, medications, stress and lifestyle. That's why an evaluation, including fasting morning testosterone tests, should come before any treatment.
How does testosterone affect sex drive and erections?
Testosterone supports sexual desire, and reduced desire and erectile dysfunction are both recognized symptoms of low testosterone. A drop in sex drive is often the change men notice first.
The Endocrine Society guideline lists reduced sexual desire and erectile dysfunction among the symptoms of testosterone deficiency, and suggests testing testosterone in men with either. MedlinePlus notes that a lower sex drive with age may relate to a lower testosterone level, but may also come from illness, long-term conditions, medicines or life changes.
What else causes erectile dysfunction?
Many health problems can cause erectile dysfunction, including diabetes, heart and blood vessel disease, high blood pressure, chronic kidney disease, obesity, nerve damage and prostate problems. Medications, stress and habits like smoking and heavy drinking play a part too.
NIDDK lists these conditions, along with hormone problems such as low testosterone and thyroid disorders. Common medicines linked to erectile dysfunction include some antidepressants, blood pressure medicines, antihistamines, sedatives and pain relievers. Anxiety, depression and stress can cause it or make it worse. Often more than one factor is involved.
Why does an evaluation matter before treatment?
An evaluation finds the actual cause. If the problem is blood vessels, blood sugar or a medication, raising testosterone won't fix it, and the underlying condition may need attention for your overall health.
Diagnosing erectile dysfunction involves your medical, sexual and mental health history, a physical exam, and lab tests, as NIDDK describes. For testosterone, the Endocrine Society recommends a diagnosis only when symptoms fit and fasting morning levels are low on repeat testing. If you think a medication is affecting you, don't stop it on your own; talk with the provider who prescribed it.
Many of the conditions behind erection problems, such as diabetes, high blood pressure and blood vessel disease, matter for your health well beyond the bedroom. So an erection problem is a good reason to get your overall health checked, not only your hormones. If it's been a while since you saw your primary care provider for a checkup, now is a good time.
Can testosterone therapy improve sexual function?
In men with confirmed low testosterone, treatment can improve sexual desire and function, though the benefit is moderate and results vary. It isn't meant for men whose testosterone is normal.
In a one-year trial of men 65 and older with low testosterone, raising testosterone to the mid-normal range increased sexual activity, sexual desire and erectile function, a benefit the researchers described as moderate. Guidelines reserve testosterone therapy for men with symptoms and consistently low levels, after a discussion of the benefits, the risks and the monitoring involved. Read what to expect at a TRT clinic for how that works.
Is a low sex drive always about hormones?
No. Stress, depression, relationship strain, poor sleep, alcohol, illness and medications can all lower desire, with or without a hormone problem. Testing helps separate the causes, so you're not guessing.
Low desire and erection problems also feed each other: worry about performance can dampen interest, and low interest can make erections harder. Being open with your provider about what's changed and when it started gives the clearest picture. There's nothing to be embarrassed about; these are routine medical questions.
What should you tell your provider?
Describe what's changed, such as desire, erections or both, when it started, and whether it happens every time or only sometimes. Include every medication and supplement, your alcohol and tobacco use, and any diabetes, heart or blood pressure history.
Mention other symptoms too, like low energy, poor sleep, low mood or lost strength, since they help show whether testosterone could be involved. The signs of low testosterone article lists what to watch for. It helps to write these details down before your visit, since they're easy to forget in the moment. If you have a partner, what they've noticed, such as snoring, mood changes or low energy, can be useful to share as well.
How can Padgett help if you're concerned about low testosterone?
At Padgett Medical Center in Tampa, hormone care is lab-guided and medically supervised, and lab testing comes first. Morgan Colee, PA, reviews your labs with you, and your plan and its cost depend on those results.
If your testosterone is low, you'll talk through whether testosterone therapy (TRT) fits you. If your labs point somewhere else, your provider will tell you and talk through the next step. Visits are in person at 6904 W. Linebaugh Ave, Tampa, FL 33625, or by telehealth anywhere in Florida with a valid Florida driver's license or ID shown on camera. No diagnosis or prescription is promised in advance. Book your visit.
This article is educational and is not medical advice. Talk with a licensed provider about your own health, medications and treatment options.
Frequently asked questions
Can low testosterone cause erectile dysfunction?
It can contribute. Erectile dysfunction is a recognized symptom of low testosterone, but it's often caused or worsened by other things, such as diabetes, blood vessel disease, high blood pressure, medications or stress. Fasting morning blood tests, repeated to confirm, show whether testosterone is part of the problem.
Will testosterone therapy fix erectile dysfunction?
Not necessarily. In men with confirmed low testosterone, treatment moderately improved sexual desire and erectile function in research, but if the main cause is blood vessels, diabetes or a medication, testosterone alone won't fix it. That's why finding the cause comes before choosing a treatment.
Can my medications lower my sex drive?
Some can. Certain antidepressants, blood pressure medicines, antihistamines, sedatives and pain relievers are linked to sexual side effects. Don't stop any medication on your own. Tell the provider who prescribed it, who can review whether it might be involved and what your options are.
Does low testosterone affect younger men's sex drive too?
Yes. Low testosterone isn't only an age-related issue; it can come from pituitary problems, injury, genetic conditions, rapid weight loss or certain medicines. A lower sex drive at any age is worth mentioning to a provider and checking with fasting morning blood tests.
Sources
- Symptoms & Causes of Erectile Dysfunction, NIDDK
- Diagnosis of Erectile Dysfunction, NIDDK
- Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline, Journal of Clinical Endocrinology & Metabolism, 2018 (PubMed)
- Effects of Testosterone Treatment in Older Men, New England Journal of Medicine, 2016 (PubMed)
- Aging changes in the male reproductive system, MedlinePlus Medical Encyclopedia
