25 Warning Signs of Low Testosterone in Men

25 Signs Your Testosterone May Be Low

Written by: Dr. Brian Steixner

Key Takeaways

Low testosterone affects more than your sex life

Common signs of low testosterone include fatigue, mood swings, and muscle loss

A simple blood test can confirm low testosterone

Low testosterone treatment options range from lifestyle changes to TRT

Always work with a healthcare provider to find the right path

Testosterone 101: Your Body's Built-In Power Source

Let’s talk testosterone. You know, the hormone that helps you feel like you. It’s often labeled the "male hormone," but it does a lot more than boost your bedroom game. Testosterone fuels everything from muscle and mood to motivation and metabolism. When your levels tank, your body and brain can go into a bit of a spiral.

Medically known as testosterone deficiency or male hypogonadism, low testosterone doesn’t just mean you're aging or tired; it could be your body waving a hormonal red flag. Below are 25 signs that might suggest testosterone levels in men are dipping lower than you’d like.

25 Signs Your Testosterone May Be Low:

1. Your Sex Drive Took a Vacation

Missing your mojo? A plummeting libido is one of the most classic signs of low testosterone. If you’re suddenly more into sleep than sex, it might be time to get things checked.

2. Trouble Rising to the Occasion

Struggling with erections or staying firm during sex? While a lot of factors can mess with performance, testosterone plays a starring role by triggering nitric oxide—the MVP of blood flow. Low testosterone = less firepower.

3. You’re Exhausted—Even After Sleeping In

Dragging through the day even after a solid night’s rest? Fatigue is a telltale testosterone deficiency symptom. Your body isn’t lazy, it’s likely running on empty.

4. Your Muscles Are on the Decline

Even with regular workouts, if your gains are gone or your biceps are starting to feel a little deflated, low testosterone might be blocking your muscle-building goals.

5. The Belly Bloat is Real

Noticed some extra love around your midsection? Testosterone helps regulate fat distribution. When it dips, belly fat often creeps in—and refuses to leave.

6. Your Strength Isn’t What It Used to Be

If lifting groceries feels like weightlifting, or your usual reps are suddenly impossible, a hormone check might be in order.

7. You’re Moody and Snappy

Mood swings aren't just a thing from high school. Low testosterone can mess with your emotional thermostat, making you more irritable or anxious than usual.

8. The Blues Are Settling In

There’s a connection between testosterone and depression. If you’re feeling down, hopeless, or checked out, your hormones could be part of the problem.

9. Brain Fog is Clouding Your Day

Can’t remember where you put your keys—or why you walked into the room? Cognitive issues like forgetfulness or lack of focus are sneaky signs of low testosterone.

10. Sleep is a Hot Mess

Insomnia, restless tossing, or early wakeups? Yep, testosterone and sleep are deeply connected. A drop in T can throw off your circadian rhythm.

11. No More Morning Glory

Morning wood? Consider it a daily wellness check. If it’s missing in action, your testosterone might be waving the white flag.

12. Struggling with Fertility

If you are trying to start a family and things are not going as planned, low testosterone could be messing with your sperm production. A testosterone blood test might be the first step to clarity. While you are getting answers, it is also a great time to support your reproductive health with  Popstar Fertility for Men Daily Supplement, designed to promote healthy sperm production and hormonal balance.

13. Smaller... You Know

Testicular atrophy (aka shrinking balls) isn’t just something guys joke about. It’s a legit sign of male hypogonadism.

14. Patchy Beard or Less Body Hair

Noticing a weaker beard or thinning chest rug? Testosterone fuels facial and body hair. Low testosterone can lead to patchy results.

15. Your Bones Feel Brittle

Testosterone and bone density are BFFs. If your bones feel fragile or achy, it might be time to talk about osteopenia or osteoporosis with your doc.

16. Surprise! Hot Flashes

Yes, men can get hot flashes too. If you’re suddenly sweating through your shirt like it’s puberty all over again, low testosterone may be the culprit.

17. Got Moobs?

Increased breast tissue, aka gynecomastia, is usually a result of hormonal imbalance. And it’s more common than you’d think.

18. Your Drive Has Disappeared

No motivation? No hustle? That go-getter energy might be tanking because your testosterone is too.

19. Anxiety is Creeping In

Hormones and anxiety are strange bedfellows. While testosterone isn’t the only factor, low levels can definitely fan the flames.

20. You Feel... Off

Sometimes you can’t put your finger on it. You’re not sick, but you’re not quite you. That vague off-ness is worth investigating.

21. Your Confidence Took a Hit

Confidence issues can come from many sources, but if you’re feeling less sure of yourself lately, hormones could be whispering self-doubt into your ear.

22. Workouts Take Longer to Bounce Back From

Feeling sore for days after hitting the gym? Testosterone and muscle mass go hand in hand—and help with repair and recovery too.

23. Less Competitive? That’s Not You

Whether it’s at work, in sports, or just trivia night, if you’ve lost that edge, testosterone might be to blame.

24. Achy Joints Are a Daily Thing

Testosterone helps reduce inflammation. If you’re waking up stiff or constantly nursing sore joints, a hormone check could be worthwhile.

25. Junk Food Is Winning

Testosterone and weight gain often go together. If cravings for pizza, cookies, and fries are harder to resist, low testosterone could be behind the snack attack.

What To Do If You’re Nodding at All of These

Step 1: Track Your Symptoms

Keep a note in your phone or a journal. Look for patterns, frequency, and severity.

Step 2: Book a Blood Test

A testosterone blood test is simple and revealing. Ask your doctor to check your levels and evaluate from there.

Step 3: Consider Your Options

Lifestyle tweaks like strength training, quality sleep, and stress management can help. But if your levels are really low, you might benefit from testosterone replacement therapy.

Step 4: Know the Risks

Testosterone therapy side effects exist, and your doctor should walk you through them. From acne to mood changes, it's important to monitor everything.

Wrap-Up: Time to Take the Reins

Testosterone powers way more than people realize. From your energy and mood to your muscles and sex life, it’s one of the unsung heroes of health. If you’re experiencing several of the signs listed here, don’t write them off. A quick blood test could open the door to feeling better—stronger, sharper, and more you.

Frequently Asked Questions

What’s the difference between testosterone deficiency and male hypogonadism?

Nothing—just two ways to say the same thing.

Can you boost testosterone naturally?

Yes. Exercise, better sleep, and stress management can help. Supplements may support healthy levels.

Is testosterone therapy safe?

It can be, under the care of a qualified provider. But like all treatments, it comes with potential side effects.

Do women need testosterone too?

They do—just in smaller amounts. But this article’s all about the fellas.

Is low testosterone reversible?

Sometimes, depending on the cause. That’s why testing is key.

Dr. Joshua Gonzalez

Dr. Joshua Gonzalez

Dr. Joshua Gonzalez is a board-certified urologist who is fellowship-trained in Sexual Medicine and specializes in the management of male and female sexual dysfunctions. He completed his medical education at Columbia University and his urological residency at the Mount Sinai Medical Center. Throughout his career, Dr. Gonzalez has focused on advocating for sexual health and providing improved healthcare to the LGBTQ+ community.

Dr. Brian Steixner

Dr. Brian Steixner

Dr. Brian Steixner is a board-certified urologist and an expert in men’s sexual medicine. He completed his General Surgery and Urology training at The University of Pennsylvania and The Children’s Hospital of Philadelphia, one of the busiest and most comprehensive programs in the nation. During his career, Brian has treated thousands of men with sexual health issues including male factor infertility.

Frequently Asked Questions

Dr. Gonzalez Answers

Popstar Labs cofounder Dr. Joshua Gonzalez is a board-certified urologist and Sexual Medicine expert, here to answer your questions

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