Written by Jillian Gordon
Medically reviewed by Dr. Haleem Mohammed, Chief Medical Officer at Gameday Men’s Health
At a Glance
- Low testosterone symptoms can be mistaken for stress, poor sleep or normal aging.
- Common signs of low T include fatigue, low libido, erectile changes, muscle loss, and increased body fat.
- Lesser-known symptoms may include mood changes, brain fog, poor sleep, and reduced facial or body hair.
- Having one or more symptoms doesn’t necessarily mean you have low T.
- Testosterone testing and a comprehensive evaluation can help determine whether a deficiency may be contributing to your symptoms.
Low testosterone doesn’t always show up in obvious ways. While low libido or changes in sexual function may raise a red flag, other symptoms can be easy to overlook or often confused with the effects of stress, a busy schedule or simply getting older.
“A lot of guys ignore symptoms like increased irritability, loss of motivation, poor sleep quality, or general brain fog,” says Dr. Haleem Mohammed, MD, MBA, Chief Medical Officer at Gameday Men’s Health. “They often attribute these to stress or getting older rather than a treatable clinical condition like hypogonadism or low testosterone.”
In fact, Dr. Hal says low T is often underdiagnosed. “Most patients are surprised because they have been told their numbers are ‘normal’ or that their symptoms are just ‘normal aging.’”
While symptoms don’t necessarily mean you have low testosterone, they are often reason enough to get your levels checked. Here are 10 commonly overlooked signs of low T to watch for.
1. You’re Tired All the Time
Sure, occasional fatigue can simply be due to a bad night’s sleep, but if you’re consistently feeling tired and sluggish throughout the day, low testosterone could be playing a role. Men with low T may notice a persistent lack of energy, decreased stamina or motivation, or simply feel like it takes more effort to get through their usual routine.
Because fatigue can have many potential causes, the only way to know whether low testosterone is to blame is to get your levels checked. Gameday Men’s Health offers in-clinic testosterone testing along with a comprehensive evaluation to help identify what may be behind your symptoms. And if low T is diagnosed, treatment may help. In fact, studies show that just one year of testosterone replacement therapy (TRT) was associated with a significant decrease in fatigue.
If you’re experiencing fatigue on a regular basis, find your local Gameday Men’s Health clinic for a full evaluation of your hormone levels.
2. Your Sex Drive Has Decreased
Unfortunately, low testosterone often goes hand-in-hand with low libido. If you’re experiencing a noticeable decline in your sexual desire without an obvious explanation, it could be a sign of testosterone deficiency.
Of course, libido can fluctuate for many reasons, including stress, poor sleep, medications, and relationship factors. But when your sex drive drops unexpectedly, it may be worth taking a closer look at your hormone levels.
3. You’re Experiencing Erectile Changes
Since testosterone can affect sexual function, erectile dysfunction (ED) can be an early symptom of low T. This is especially true if you’re experiencing a change in morning erections. “Loss of morning erections is another big one. Most guys don't realize that it may be related. It seems to be the last thing guys want to mention to a doctor,” says Dr. Hal.
That said, ED doesn’t automatically mean you have low testosterone. ED can also be related to cardiovascular health, medications, stress, psychological factors, and other underlying conditions, making it important to get to the root cause of your symptoms.
At Gameday Men’s Health, providers can evaluate both hormone health and sexual wellness concerns to better understand what may be contributing to your symptoms and develop a personalized treatment plan based on your individual needs and health goals.
4. You’re Losing Muscle or Strength
According to research, low testosterone levels are often associated with “unfavorable body composition changes,” including muscle loss. This might show up as workouts feeling more difficult, a noticeable decline in strength or difficulty maintaining the muscle you once had despite keeping up with your usual exercise routine.
Because testosterone plays an important role in maintaining muscle mass and strength, these changes are worth paying attention to, especially if they occur with other potential signs of low T. If testing confirms testosterone deficiency, TRT may help restore testosterone to a healthy range and work to prevent future muscle loss.
5. You’re Gaining Body Fat
In addition to muscle loss, fat gain (especially belly fat) is another often ignored sign of low testosterone. The relationship between testosterone and weight can also go both ways. Research suggests that low testosterone may contribute to increased body fat, while excess weight can itself be associated with lower testosterone levels. This makes proper testing and a full evaluation of your metabolic health especially important.
If weight gain is one of your concerns, Gameday can look at both your hormone levels and weight concerns to create a personalized plan for hitting your goals.
6. You’re Feeling More Irritable or Down
Not feeling like yourself lately? Mood changes, including increased irritability or depression, are another lesser-known symptom associated with low testosterone. If these changes are persistent, particularly when they occur alongside other symptoms like fatigue, low libido or changes in body composition, it may be time to have your testosterone levels checked.
7. You Can’t Focus Like You Used To
Difficulty concentrating or brain fog is yet another symptom of low T that men may ignore. In fact, studies show that lower testosterone has been linked to actual cognitive decline in older men.
In everyday life, this lesser-known symptom might show up as trouble staying focused, forgetfulness or a lack of motivation to tackle tasks that once felt routine. While an occasional off day is normal, persistent changes in your ability to think clearly or concentrate are symptoms worth investigating.
8. Your Sleep Has Changed
While fatigue is a common symptom of testosterone deficiency, poor sleep quality may also be part of the picture. Many men with low T report experiencing sleep-related concerns, while studies suggest that poor sleep quality, insufficient sleep, disrupted circadian rhythms, and sleep-disordered breathing may in turn contribute to lower testosterone levels.
In other words, the relationship can go both ways. Changes in sleep may accompany low testosterone, while consistently poor sleep may negatively affect testosterone production.
9. You’re Noticing Less Body or Facial Hair
Noticing that your beard isn’t growing in as quickly or that you have less body hair than you used to? Because testosterone plays a role in male hair growth, a gradual decrease in facial or body hair can be a physical sign of a testosterone deficiency. These changes can happen slowly, making them easy to overlook (or treated as an assumed sign of aging).
10. Your Bones May Be Getting Weaker
Unlike fatigue or low libido, declining bone density isn’t something you can necessarily feel, making it one of the easier signs of low testosterone to overlook. Testosterone plays an important role in maintaining bone health, and research has linked testosterone deficiency in men to decreased bone mineral density and an increased risk of osteoporosis.
In many cases, men may not realize their bone health has declined until it shows up on a bone density scan or they suffer a bone fracture. This is why recognizing and properly evaluating all the potential signs of low T is so important, even when some of its effects aren’t immediately noticeable.
If any of these symptoms sound familiar, don’t assume they’re simply a normal part of getting older. Schedule a visit at your local Gameday Men’s Health clinic to get your testosterone levels checked and create a plan for feeling your best.
Jillian Gordon, Writer
Jillian Gordon is a Los Angeles-based writer with over a decade of experience covering health and wellness. She has written extensively about longevity science, gut and immune health, nutrition, and emerging wellness trends, with a focus on helping readers make informed decisions about their health.
Dr. Haleem Mohammed, Global Chief Medical Officer
Dr. Haleem Mohammed, MD, MBA, is the Global Chief Medical Officer of Gameday Men’s Health and an award-winning board-certified internal medicine physician specializing in men’s health and performance, including hormone optimization, weight management, erectile performance, peptide and vitamin therapy, musculoskeletal recovery solutions, longevity and precision medicine.
