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GLP-1 Science

Science-forward education on GLP-1 receptor agonists, how they work, why responses vary, what to consider for muscle preservation, and the future of personalized protocols.

16 articles in this category
GLP-1 Science

Retatrutide and Triple-Agonist Science: What Phase 3 Results Mean Before Approval

Triple-agonist therapy is producing striking weight-loss results in trials, but retatrutide is still investigational. Understanding endpoints, side effects, and regulatory status matters more than chasing a headline percentage.

CET
CoGenetix Editorial Team
5 min
GLP-1 Science

Oral GLP-1 Therapy Is Here: What a Pill Changes and What It Does Not

A pill may make GLP-1 treatment more acceptable for some people, but oral delivery does not turn prescription obesity medicine into a casual wellness product.

CET
CoGenetix Editorial Team
6 min
GLP-1 Science

Higher-Dose Semaglutide in 2026: What a New FDA Approval Does—and Does Not—Mean

A new dose expands treatment options, but an approval is not a directive for every patient. Dose decisions still depend on indication, response, tolerability, and clinical judgment.

CET
CoGenetix Editorial Team
5 min
GLP-1 Science

The New GLP-1 Quality Question: FDA Scrutiny, Compounding, and Why Source Matters

As access to GLP-1 medications expands, the quality conversation is changing. In 2026, FDA actions put renewed focus on unapproved products, bulk ingredients, and compounding rules.

CET
CoGenetix Editorial Team
4 min
GLP-1 Science

GLP-1 Medications and Pregnancy Planning: What Patients Need to Discuss Early

Weight loss and improved metabolic health may change fertility, but GLP-1 medicines are not recommended for weight loss during pregnancy and planning should begin early.

BM
Ben Martin
8 min
GLP-1 Science

GLP-1 Safety in Practice: Side Effects, Warning Signs, and Better Monitoring

GLP-1 medicines can deliver meaningful benefits for appropriate patients, but safe use requires more than tolerating nausea and watching the scale.

CET
CoGenetix Editorial Team
10 min
GLP-1 Science

GLP-1, Tirzepatide, and Sleep Apnea: What the Evidence Means Beyond Weight Loss

The GLP-1 conversation now includes sleep-disordered breathing. The advance is meaningful, but it applies to a defined population and belongs within sleep-medicine care, not a self-diagnosed weight-loss plan.

CET
CoGenetix Editorial Team
8 min
GLP-1 Science

Beyond Weight Loss: What GLP-1 Outcome Trials Show About Heart and Kidney Health

GLP-1 medicines are often discussed through pounds lost. Major outcome trials show that, in specific high-risk populations, the story also includes cardiovascular and kidney events.

CET
CoGenetix Editorial Team
9 min
GLP-1 Science

What Happens After GLP-1 Treatment Ends? The Science of Weight Maintenance

Ending a GLP-1 medication is not simply the last injection. Trials show that appetite biology and weight often move back toward baseline, which makes a clinician-guided maintenance strategy essential.

BM
Ben Martin
9 min
GLP-1 Science

Protecting Strength During GLP-1 Weight Loss: What the Evidence Really Shows

Weight loss from semaglutide and tirzepatide is primarily fat loss, yet lean tissue also changes. The practical goal is not to prevent every change on a scan; it is to preserve strength, function, nutrition, and long-term health.

BM
Ben Martin
9 min
GLP-1 Science

GLP-1 in the Broader Peptide Universe: What It Shares with Other Metabolic Signaling Molecules

GLP-1 receptor agonists are the most widely discussed peptide-based therapy in medicine today. Understanding GLP-1 within the larger science of therapeutic peptides reveals why this class of molecules is so powerful, and what its rise signals for precision metabolic medicine.

SC
Sean Charsley
9 min
GLP-1 Science

Making GLP-1 Programs More Personalized With Testing, Nutrition, and Support

GLP-1 medications work best as part of a structured program, not in isolation. Genetic testing, targeted nutrition, resistance training, and ongoing monitoring transform medication alone into a comprehensive metabolic health intervention.

TZ
Tyler Zollinger
7 min
GLP-1 Science

Genetics and GLP-1 Response: The Future of Precision Obesity Medicine

Not all patients respond equally to GLP-1 medications. Pharmacogenomics research is beginning to identify the genetic variants that predict superior or diminished response, setting the foundation for truly personalized obesity treatment.

SC
Sean Charsley
8 min
GLP-1 Science

Muscle Loss During Weight Reduction: What Patients and Clinics Should Understand

GLP-1 medications cause significant weight loss, but a meaningful portion of that loss is lean mass rather than fat. Understanding this and addressing it proactively is essential for long-term metabolic health outcomes.

BM
Ben Martin
8 min
GLP-1 Science

Why GLP-1 Results Vary Between Individuals

Some patients achieve dramatic weight loss on GLP-1 medications; others see modest results. Understanding the biological, genetic, and behavioral factors behind this variability is critical for realistic expectations and personalized programs.

TZ
Tyler Zollinger
8 min
GLP-1 Science

How GLP-1 Medications Work

GLP-1 receptor agonists represent a significant advance in metabolic medicine. Understanding the mechanisms behind their effectiveness and their limitations, is essential for informed clinical and patient decision-making.

SC
Sean Charsley
9 min