Doctor Reveals Why Bodybuilders Started Using Ozempic in the Late 2010s (Before It Was FDA-Approved for Weight Loss)

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Julien Raby

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Sam Altman’s public disclosure about overdosing on a GLP-1 medication from a compounding pharmacy sparked crucial conversations about these weight-loss drugs.

The tech entrepreneur’s experience highlights growing concerns about proper dosing, drug quality, and potential cognitive side effects.

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Beyond weight loss, emerging evidence suggests these medications may fundamentally alter motivation, drive, and brain function in ways scientists are only beginning to understand.

Meanwhile, millions are experimenting with microdosing strategies, often obtaining medications through unofficial channels, raising serious safety questions.

The Compounding Pharmacy Problem

Altman’s overdose reportedly stemmed from incorrect dosing at a compounding pharmacy. During early adoption phases, people were “just getting them where they could get them,” according to health experts discussing the incident.

Compounding pharmacies create customized medication formulations, but quality control varies dramatically compared to FDA-approved pharmaceutical products. Getting “the dosage right” and ensuring clean, accurate compounds remains critical.

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Understanding GLP-1 Medications

The current GLP-1 landscape includes semaglutide (Ozempic and Wegovy) and tirzepatide (Mounjaro and Zepbound). Wegovy and Zepbound represent FDA-approved versions specifically for weight loss, allowing pharmaceutical companies to extend patent protection.

These medications are fundamentally transforming medicine. Without such interventions, healthcare systems faced potential collapse under the weight of obesity, prediabetes, and diabetes epidemics.

We don’t have enough clinicians or finances to get everybody who was prediabetic in the last, you know, 20 years and they all transition to diabetes and ended up with, you know, diabetic medications and dialysis and eventually cardiovascular disease and all these things. We don’t have the resources to take care of all these people.

GLP-1s now offer opportunity to dramatically reduce rates of obesity, diabetes, prediabetes, and cardiometabolic disorders. Previous weight loss drugs achieved only 5-10% body weight reduction. Current GLP-1 medications produce 10-20% losses, with newer retatrutide data showing up to 30% reduction.

The Bodybuilder Discovery

Pharmaceutical companies didn’t initially target obesity. Bodybuilders pioneered off-label GLP-1 use for weight loss in the late 2010s, recognizing that diabetic patients consistently lost weight on these medications.

GLP-1 originates from Gila monster saliva—another animal-derived compound in medicine’s arsenal. The natural version proved too short-acting for clinical use until pharmaceutical companies engineered longer-lasting versions with extended half-lives.

Early versions like Byetta demonstrated transformative effects. One physician recalled his grandmother’s experience 25 years ago: “It was the out of all the drugs she was on, the reason I went into medicine, that was the drug that changed her whole trajectory because she had less insulin needs and she was losing weight, more energetic.”

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If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.

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  • Solid cast iron build that feels stable and lasts for years
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The Motivation Question

Altman described experiencing lowered motivation alongside reduced food drive—a pattern many users report anecdotally. This raises fundamental questions about whether GLP-1s suppress drive beyond appetite, depending on which neural pathways get affected.

The mechanism involves massive increases in GLP-1 levels. Earlier diabetic medications doubled or quadrupled GLP-1 without significant weight loss. Modern weight-loss formulations create thousandfold increases.

Scientists don’t yet understand long-term effects on neural plasticity and learning. Effects could prove positive—research suggests potential Alzheimer’s protection for older diabetic patients through improved insulin dynamics and reduced obesity-related risk.

Direct Drug Effects Versus Downstream Consequences

Determining whether cognitive effects stem directly from GLP-1 receptor activation or secondary factors remains challenging. Multiple confounding variables exist:

  • Dosing issues: Excessive doses causing inadequate nutrition
  • Electrolyte imbalances: Low blood pressure from insufficient sodium intake
  • Hypoglycemia: Blood sugar crashes from dramatically reduced eating
  • Social isolation: Reduced participation in food-centered social activities
  • Nutritional deficiencies: Missing essential micronutrients and macronutrients

Clinical approaches emphasizing proper protocols report fewer negative effects. The “training wheel” method starts patients on minimal effective doses combined with lifestyle modifications, dietary guidance, and exercise programs.

When people do it that way, I don’t hear a lot of these effects anecdotally from Berkeley patients that we hear about online where people are like, “Oh, I’m depressed. I hate my life.” from these drugs.

Brain Chemistry Changes

Evidence shows GLP-1s reduce alcohol cravings, suggesting alterations in dopaminergic signaling. This becomes concerning when people combine GLP-1s with ADHD medications or stimulant peptides like semax.

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If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.

  • Full-body training with one weight using swings, squats, and presses
  • Solid cast iron build that feels stable and lasts for years
  • Comfortable grip that makes high-rep workouts easier to handle

GLP-1 receptors exist on POMC neurons controlling critical functions. Downstream effects on the leptin-melanocortin pathway influence energy status, thyroid hormone production, and reproductive function.

Some users report improved cognitive function at lower-than-prescribed doses. Enhanced insulin sensitivity and reduced body fat (itself an endocrine organ) could explain these benefits without requiring direct brain effects.

The Fertility Connection

“Ozempic babies” represent an unexpected phenomenon—previously subfertile or infertile women becoming pregnant after starting weight loss medications.

Leptin status serves as a key fertility driver. Starvation signals (low leptin) prevent reproduction. Leptin resistance from excessive body fat similarly impairs fertility. GLP-1-induced weight loss modulates both conditions.

Research indicates leptin reaching specific thresholds triggers puberty onset in females—body fat signaling sufficient energetic resources for reproduction.

The Set Point Theory

Weight regulation represents complex daily calculations performed by the brain integrating multiple hormones and peptides: GIP, GLP, glucagon, insulin, testosterone, estrogen. These signals determine eating behavior through “set points” or “settling points.”

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FULL-BODY TRAINING

If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.

  • Full-body training with one weight using swings, squats, and presses
  • Solid cast iron build that feels stable and lasts for years
  • Comfortable grip that makes high-rep workouts easier to handle

GLP-1 provides a giant “don’t eat” signal to the brain. When discontinued, many patients regain weight—sometimes returning to baseline. Pharmaceutical companies haven’t provided adequate guidance on tapering strategies.

Critical questions remain unanswered: Must patients stay on medications indefinitely? What happens to young adults losing 30-40 pounds on high-dose retatrutide—will lifelong treatment become necessary?

The Microdosing Trend

Many people are independently reducing prescribed doses, sharing medications, and sourcing through unofficial channels. Underground peptide websites encourage stacking multiple compounds, creating what experts call an “increasing AOV problem”—average order value climbing as customers add accessory peptides.

This uncontrolled experimentation occurs without medical supervision, proper dosing guidance, or quality assurance.

Living in a Post-GLP-1 World

Healthcare professionals acknowledge no return to pre-GLP-1 medicine exists. These medications now fundamentally shape clinical practice and public health strategy.

The reality is it’s here. There is no pre-GLP-1 world for us as clinicians, as health enthusiasts. We’re in a post-GLP-1 world and everything kind of dictates downstream from that.

Cautious optimism prevails among experts. Data appears promising for reversing chronic disease rates. Whether medications represent truly consequence-free interventions remains uncertain.

Build Strength and Conditioning With One Simple Tool
FULL-BODY TRAINING

If you want something simple that actually works, this is one of the most effective tools I’ve used to build strength, conditioning, and endurance without needing a full gym setup.

  • Full-body training with one weight using swings, squats, and presses
  • Solid cast iron build that feels stable and lasts for years
  • Comfortable grip that makes high-rep workouts easier to handle

Historical medical mishaps warrant careful monitoring. Long-term cognitive effects on developing brains deserve particular scrutiny as younger patients increasingly access these medications.

Proper protocols—minimal effective dosing, comprehensive lifestyle modification, nutritional support, medical supervision—appear essential for maximizing benefits while minimizing risks. The alternative of unchecked obesity and metabolic disease presents its own severe consequences.

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