Is Your Testosterone Low? Here’s What to Watch For

You’re dragging through the day. Workouts aren’t working. Your drive—both mental and physical—is flatlined.

Most men don’t realize they’re running low on testosterone until it’s already taken a toll.

It doesn’t show up overnight. It creeps in—slowly, quietly—until one day you wake up and something just feels... off.

You’re dragging through the day. Workouts aren’t working. Your drive—both mental and physical—is flatlined.

Here’s the truth: low testosterone is far more common than you think, especially for men over 40. And if you don’t catch it early, it affects everything—your energy, your mood, your focus, your performance.

Let’s break down the signs.

The Top Warning Signs of Low Testosterone

1. Fatigue That Won’t Quit

You’re getting 7 hours of sleep, maybe even eating clean—but you still feel like you’re walking through fog. Afternoon crashes hit harder. Your energy is gone by dinner.

That’s not normal. And it’s not just “getting older.”

2. Brain Fog and Focus Issues

You used to power through projects. Now, you’re rereading the same email three times. Can’t concentrate, can’t remember names, can’t think straight.

Testosterone plays a key role in mental sharpness. When it drops, so does your ability to think clearly.

3. Low Libido and Sexual Performance Issues

One of the most obvious (and most ignored) signs. You’re just not interested like you used to be. Or when you are, performance isn’t the same.

This isn’t just a bedroom issue—it’s a hormonal one. And ignoring it only makes things worse.

4. Loss of Muscle and Increased Body Fat

You’re hitting the gym, but the results aren’t there. Muscle is harder to gain. Fat is sticking around your midsection no matter what you do.

Low testosterone slows your metabolism, increases fat storage, and reduces protein synthesis.

5. Mood Changes and Irritability

Less patience. More frustration. Mood swings. Even low-grade depression. These aren’t just emotional—they’re hormonal.

Your brain needs testosterone to regulate dopamine and serotonin. Without it, your mood takes a hit.

6. Poor Sleep Quality

Not just quantity—quality. You’re waking up in the middle of the night, tossing and turning, or feeling unrested in the morning. Poor sleep reduces testosterone production, and low testosterone worsens sleep. It’s a vicious cycle.

7. Reduced Drive and Motivation

You’re not lazy. You’re not “burnt out.” You might be hormonally depleted. Testosterone fuels ambition, grit, and competitive edge. When levels drop, that internal fire dims.

What to Do Next

If any of this sounds familiar, don’t brush it off. Don’t write it off as aging. And don’t guess.

Get tested. Total testosterone, free testosterone, SHBG, estradiol, and DHEA. Then work with someone who knows how to interpret the full picture, not just whether you’re “in range.”

How I Help Men Fix the Root Problem

With my program, Codex, I go beyond symptoms. I look at your hormones, gut, sleep, lifestyle, and stress—all the variables that drive testosterone levels. Then I build a custom health blueprint to get everything back on track.

  • No cookie-cutter plans

  • No one-size-fits-all treatments

  • Just science, precision, and support

Because you don’t have to decline after 40. You just need the right tools—and a partner who knows how to use them.

If you’re ready to find out what’s really going on, schedule a consultation. Let’s stop guessing and start fixing.


CODEX

The Art of Aging Well

A revolutionary approach, created by award-winning, board-certified physician and surgeon, Dr. Peter Marta, combining the precision of conventional medicine and the nuance of functional medicine. At the heart of Codex is hormone optimization, with a comprehensive system addressing seven core areas vital for men’s wellness. What even many physicians overlook is that hormonal health and gut health are inextricably linked—you can’t have one without the other. Codex addresses these connections, unlocking vitality and balance through a tailored, easy-to-follow, scientific approach.



Dr. Pete Marta

I’m Dr. Peter Marta (affectionately known as Dr. Pete), a board-certified physician and surgeon. I focus on men’s health and hormone optimization. You don’t have to decline after 40. You can be in the best shape of your life from here on out.

Through my science-backed program, Codex, that combines the precision of conventional medicine, with the nuance of functional medicine, I’m here to help you reclaim your health and thrive after 40 and beyond.

https://www.petermarta.com/
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