Is Jeff Cavaliere on Steroids or Natty? (The Telltale Signs)

Benedict Ang, CPT, PN1-NC
Published by Benedict Ang, CPT, PN1-NC | Staff Writer & Senior Coach
Last updated: May 10, 2024
FACT CHECKED by James Cunningham, BSc, CPT
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The rumors that Jeff Cavaliere, also known as "AthLEAN-X," uses fake weights in his workout videos has led many to speculate the YouTube sensation is on steroids.

Having personally delved into Jeff's fitness guides, I can attest to the depth of his knowledge and the efficacy of his muscle-building techniques, drawing from my own experience and results.

So, when rumors spread that he was using steroids to achieve his physique, I spent two weeks doing extensive research to see if I could find any viable evidence.

In this article, I will share the results of my investigation, so keep reading to find out if AthLEAN-X is a natural bodybuilder.

Does Jeff Cavaliere Take Steroids?

In my professional journey, integrity and authenticity in fitness are paramount.

Jeff resonates with these values, having never failed a drug test, a fact that lends credibility to the natural aspect of his physique.

In my interactions with elite athletes and coaches, rigorous testing for PEDs is a norm.

Jeff, with his stature and affiliations, would have undergone stringent tests, reinforcing the authenticity of his natural physique [1].

Furthermore, I believe he wasn't using drugs because at 5 feet 10 inches tall, he appropriately weighs 175 pounds.

But to better ascertain whether Jeff has taken steroids, I researched some of the common steroid-related symptoms he might’ve experienced over the years.

Physical Signs of Cavaliere's Steroid Use

Pills on a table

While we're addressing the speculations around Jeff Cavaliere's alleged steroid use, it's essential to delve into the underlying psychology that often fuels such accusations in the fitness industry. The impact of social media, coupled with unrealistic body expectations and misinformation, plays a significant role in this narrative.

Jeff was accused of being a fake natty due to a number of steroid-related physical signs, including:

Rapid Bulking Process

Having witnessed the rapid transformations steroids induce, Jeff’s gradual muscle augmentation, especially in his 40s, resonates with my own natural progression, underscoring a journey untainted by anabolic steroids, explained by study published in PubMed [2].

Extreme Vascularity

In the myriad of physiques I’ve encountered, protruding veins during rest are a rarity, often signaling PED use.

Jeff’s absence of this trait aligns with the natural athletes I’ve trained and interacted with over the years.

When I watched videos of Jeff's interviews, I saw no evidence of extreme vascularity, suggesting that he wasn’t abusing illegal substances, based on research published in PubMed [3].

Large Breast Tissue or Gynecomastia

Research has shown that prolonged use of anabolic drugs can result in large breast tissues that differ from hard chest muscles.

After analyzing Jeff's photos and videos, I found no evidence of gynecomastia, implying that he did not use steroids to bulk up [4].

Jeff's Body Transformation

A ripped body builder holding a dumbbell

Jeff Cavaliere’s transformation, from a high school weightlifter to a fitness influencer, has motivated many, showcasing the power of consistent training.

He also desired to gain muscle mass to improve his baseball and soccer skills.

He took advantage of his degree in Physical Therapy to improve his physique and establish himself as a credible trainer for well-known professional sports teams and celebrities.

"It was a dream come true for me and an opportunity that I will cherish and remember fondly forever. It changed my life."

– Jeff Cavaliere

As he continued to build, develop, and define his muscles well into his forties, he leveraged social media to offer a personal training regimen.

Read More: Athlean X’s Workout Split for Big Results

Jeff Cavaliere's Current Stats

  • Age: 46 years (Born: June 28, 1975)
  • Height: 5 ft 10 in
  • Weight: 175 lbs (79 kg)
  • Body Fat Percentage: 5-7 percent
  • Chest: 42 inches
  • Waist: 26 inches
  • Biceps: 17 inches

Is His Physique Attainable Naturally?

Doctor consultation

To further dispel the steroid use rumors, it's worth taking an in-depth look at Jeff Cavaliere’s meticulously crafted training regimens.

The effectiveness of his workouts, rooted in scientific principles and tailored to promote natural muscle growth, is a testament to his expertise.

Considering his moderate size and lean frame, Jeff Cavaliere's physique is attainable without steroids, especially when compared to larger bodybuilders known for steroid use.

Developing lean muscles even in your middle age may be possible if you dedicate time and effort to staying healthy through eating complete macronutrients and following a strict Athlean-X workout routine.

Drawing from my personal journey and the transformations I’ve witnessed, I’ve realized the synergy of weight training and balanced nutrition is foundational but often complemented by strategic supplementation to achieve ambitious bodybuilding milestones.

I always recommend supplementing your diet and exercise with natural bulking stacks based on legal and natural ingredients combined to increase testosterone levels and accelerate muscle growth and definition even further.

Was Cavaliere Tested for Steroid Use?

In the echelons of the fitness industry where Cavaliere resides, scrutiny is intense, and testing for steroids is almost a rite of passage.

His affiliations with professional baseball teams and renowned sports personalities further underscore the rigorous assessments, amplifying the credibility of his natural physique.

In 2006, 2007, and 2008, he served as the New York Mets' physical therapist and assistant strength coach, where he trained Hall of Fame pitchers Tom Glavine and Pedro Martinez.

As a conditioning coach and personal trainer for well-known athletes, he may have been tested for drugs as part of the sports’ rules and regulations.


Is Jeff Cavaliere Using Fake Weights?

Jeff Cavaliere probably isn't using fake weights because he has already established his muscle strength and endurance over many years. As a physical therapist, he also understands the science behind lifting, including proper stance and body positioning.

Does Jeff Cavaliere Have Health Issues Due To Steroids?

Jeff Cavaliere has no steroid-related health issues and appears in good shape in his social media posts. He works hard to maintain a lean and muscular frame even in his forties, and he shares how to do so in his fitness guides.

Is Jeff Cavaliere Natty?

From the meticulous research and analysis I conducted, drawing from my insights in the fitness landscape, it’s evident that Cavaliere’s integrity remains unblemished, with no positive results from any doping tests throughout his illustrious career as a strength coach.

In addition, there were no signs of PED use in his body, such as gynecomastia, acne scarring, sudden massive weight gain, or hair loss.

Yet, I also recognize, as evidenced in numerous transformations, that sculpting defined muscles is a journey, often spanning years, where patience and persistence are the companions of every stride.

So, I always advise my clients to supplement with legal alternatives to steroids for men.

Both my clients and I have experienced marked enhancements in strength and stamina, a testament to their efficacy, sans the perils associated with anabolic steroids


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About The Author

Benedict Ang, CPT, PN1-NC
Staff Writer & Senior Coach
Benedict Ang, CPT, PN1-NC is an ex-National Soccer player turned MMA and Kickboxing champion, with ACE CPT and PN1-NC certifications. His advice is rooted in education and experience, ensuring that readers receive scientific and battle-tested insights. His mission is to empower his clients and readers to realize their potential and become the best versions of themselves.
Learn more about our editorial policy
James Cunningham, BSc, CPT
Staff Writer & Senior Coach
James Cunningham, BSc, CPT holds a BSc degree in Sport & Exercise Science from University of Hertfordshire. He's a Health & Performance Coach from London that brings a unique blend of academic knowledge of health supplements and practical exercise experience to the table for his readers.
Learn more about our editorial policy

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