Does Testosterone Cause Heart Attacks? What the Traverse Trial Actually Found

About this Podcast

For seven decades, the answer to "does testosterone cause heart attacks" was a reflexive yes. Doctors warned men; men avoided treatment, and an entire generation walked through their forties and fifties exhausted, depressed, losing their muscle and their drive, all because of a fear that was built on bad science and never seriously questioned. The FDA-backed Traverse trial just changed that. Over 5,000 men were followed for three years on testosterone replacement therapy. Zero increased cardiovascular risk. In some metrics, the men on testosterone actually did better than the men on placebo.

In this episode of the Legacy and Longevity Podcast with host Zach Dancel, Stephanie Misanik, Clinical Director at Nava Health, to dismantle the cardiovascular myth that's kept a generation of men away from one of the most cardio protective molecules in modern medicine. The conversation walks through the precise origin of the scare, the flawed studies that built it, what the new data means for every man currently avoiding TRT, and what to actually do about it.

What this episode teaches in plain terms: the cardiovascular risk of properly managed testosterone replacement therapy is the opposite of what most doctors still believe.

 Lesson 1: Why Bodybuilders Get Blamed for the Cardiovascular Scare   

The cardiovascular risk story didn't start in a research lab. It started in gyms. Bodybuilders abusing testosterone at 100 times physiological doses created real problems. Cardiomyopathy. Elevated hematocrit. Genuine clotting events. Those problems were real, for them, at those doses. They have nothing to do with a man receiving a physiological replacement dose under medical supervision.

But somewhere along the way, the medical establishment conflated the two. Doctors started treating prescription testosterone replacement as if it carried the same risk profile as bodybuilder abuse. That confusion never got corrected. It just got passed down through medical training, written into clinical guidance, and used to scare patients away from a molecule their bodies actually need.

If the only frame you have for testosterone is the bodybuilder doing supraphysiological doses, you've already missed the conversation.

Lesson 2: Why the 2013 JAMA Testosterone Study Was Statistically Broken  

In 2013, a study published in JAMA claimed testosterone therapy caused increased risk of heart attack, stroke, and death in men. JAMA is one of the most prestigious medical journals in the world. Doctors picked it up. Men got scared. Prescriptions plummeted. Insurance restrictions tightened. The fear stuck.

The study had problems. It included women in a study about men. It used high-risk older populations with significant co-morbidities. It had no real baseline control for testosterone levels. And the researchers manipulated the statistics in ways that skewed the outcomes dramatically. Each of those design choices alone would call the conclusion into question. Together, they make the study un-salvageable.

But the headlines didn't include the statistical caveats. The fear stuck. A generation of men chose to suffer through low testosterone rather than risk what they thought was a death sentence.

Lesson 3: What the FDA's Traverse Trial Actually Proved About TRT  

The FDA requested it. Researchers delivered it. The Traverse trial enrolled over 5,000 men on testosterone replacement therapy for three years, tracking them against a placebo group. The question was specific. Does TRT cause the cardiovascular harm the older, broken studies claimed?

The answer was even more specific. No increase in heart attacks. No increase in strokes. No increase in cardiac mortality. No increase in venous thromboembolism, DVT, or pulmonary embolism. In fact, the men on testosterone had a slightly lower incidence of cardiac events than the placebo group. The molecule that's been demonized for 70 years turned out to be cardioprotective when properly managed.

That's not opinion. That's what a 5,000-man, FDA-backed, placebo-controlled trial just proved.

Lesson 4: Why "Normal" Testosterone Isn't "Optimal" Testosterone  

Here's a quiet truth most men never hear from their primary care doctor: the "normal" range for total testosterone (300 to 1000 ng/dL) isn't built on optimal health. It's built on the average American man. And the average American man is sick. Roughly 71% of adults are overweight or obese. Over 95% are metabolically unhealthy. More than 60% have at least one chronic disease.

When your doctor compares you to "normal," he's comparing you to that population. So when a man walks in with crushing fatigue, brain fog, zero libido, lost muscle, and a total testosterone of 305 ng/dL, his doctor looks him in the face and says: "You're in range. You're fine." He isn't. He's just average. And in a sick population, the average is a slow decline.

Optimal is the only standard worth aiming for. That requires comprehensive labs. Sex hormones. Thyroid. Metabolic markers. Inflammation. Lipids. And a clinician who understands what each number means in context. Not a 10-minute appointment with someone interpreting your results through a 1980s textbook.

Lesson 5: Can You Have Kids on Testosterone Replacement Therapy?  

Yes, exogenous testosterone suppresses your body's natural sperm production. That part is real. Your brain has a feedback loop. When it senses adequate testosterone in the blood, it stops signaling your testes to make more. That signal includes the one responsible for sperm. Skip this conversation with your provider, and you'll find out the hard way.

But this is a management problem, not a deal-breaker. Co-therapies like enclomophene and gonadarelin keep your brain signaling the testes even while you're on testosterone. The signal keeps sperm production active. Many men on TRT successfully conceive children on this exact protocol. Zach himself has three kids, conceived while on testosterone with enclomophene as the co-therapy. A Nava colleague made twins on the same protocol.

The mistake isn't TRT. The mistake is going to a clinic that hands out a script and never has this conversation with you. Find a clinician who understands the full picture. Have the fertility discussion before you start, not after.

FAQ  

 Does testosterone replacement therapy cause heart attacks?   

No. The FDA-backed Traverse trial of over 5,000 men found zero increased risk of heart attacks, strokes, or clotting events on TRT compared to placebo. In fact, men on testosterone had slightly lower cardiac event rates. The cardiovascular scare came from flawed older studies and bodybuilder dose abuse, not from properly managed replacement therapy.

 Will TRT make me infertile?   

Exogenous testosterone does suppress your body's natural sperm production through a normal feedback loop. The brain stops signaling the testes when it senses adequate testosterone in the blood. But this is reversible and preventable with co-therapies like enclomophene or gonadarelin, which keep the brain signaling the testes even while you're on testosterone. Many men on TRT successfully conceive children.

 Why does my doctor say my testosterone is "normal" when I feel terrible?   

Because conventional "normal" ranges (300 to 1000 ng/dL) are based on the average sick American population, not on optimal health. A reading of 305 ng/dL might be "in range" but it's still suboptimal for almost anyone. Symptoms matter as much as numbers. A clinician who only treats to the lab value is missing the patient entirely.

 What should I look for in a clinic that offers testosterone replacement therapy?   

Look for comprehensive labs that include full sex hormone, thyroid, metabolic, inflammation, and lipid panels, not just total testosterone and PSA. Look for an intake of at least 30 to 60 minutes. Look for recurring lab work every three to four months. Look for personalized dosing based on your full clinical picture, not a standard dose handed to every patient. And look for a clinic that integrates nutrition, lifestyle, and other care alongside the hormone protocol.

If you're a man over 30, this is one of the most important conversations you can listen to this year. Hit play and rewrite what you thought you knew about testosterone.

Stop accepting symptom management as the only option before exploring what personalized care, comprehensive labs, hormone optimization, nutrition, and lifestyle can do. Learn the health strategies traditional medicine often overlooks. Discover how, click the link below:

https://navacenter.com/

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