Weight Loss and the Role of GLP-1 and Reta
For most people who struggle with weight, the problem is not a lack of effort. Weight is shaped by a web of biological factors, including hormones, blood sugar, appetite signaling, sleep, stress, and a metabolism that adapts to resist change. Understanding weight as a medical condition rather than a personal failing is the first step toward lasting change, and it explains why newer therapies that work with the body’s biology, like GLP-1 medications and retatrutide, known as Reta, have changed what is possible.
Care at NexGen Health is directed by Dr. James Petros, MD, founder of the practice and a physician board certified in Functional Medicine, Anti-Aging Medicine, Regenerative Medicine, Physical Medicine, and Interventional Pain Management. Trained at Tulane University School of Medicine and Stanford, Dr. Petros founded NexGen Health in 2021 to deliver personalized, science-driven care that helps patients unlock their full potential and live longer, healthier lives.
What Makes Weight So Hard to Lose
When you lose weight, the body often responds as though it is under threat, lowering metabolism and raising appetite to regain what was lost. Several factors deepen the challenge.
- Appetite Hormones: signals like ghrelin and leptin can drive hunger and cravings.
- Insulin Resistance: impaired blood sugar handling promotes fat storage and fatigue.
- Metabolic Adaptation: the body slows energy use as weight comes down.
- Chronic Stress: elevated cortisol encourages fat storage, especially around the middle.
- Poor Sleep: short or broken sleep disrupts the hormones that regulate appetite.
- Hormonal Shifts: changes in thyroid and sex hormones influence weight over time.
Why GLP-1 and Reta Matter
GLP-1 medications mimic the gut hormones that regulate hunger, fullness, and blood sugar, which helps quiet cravings and makes a healthy routine feel sustainable. Reta acts on multiple metabolic pathways at once and has shown strong results for appetite and body composition. These are medical therapies that work best within a supervised plan, addressing the biology that makes weight so difficult to move.
How NexGen Health Can Help
NexGen Health treats weight as the metabolic condition it is, with testing and a physician-guided plan. Explore the practice’s medical weight loss program, metabolic accelerator IV therapy, SECA body composition analysis, EvolveX body contouring, and peptide therapy to see how a complete plan comes together.
Frequently Asked Questions About Weight Loss
Yes, weight is influenced by hormones, blood sugar, metabolism, sleep, and stress, which is why medical support often succeeds where willpower alone does not.
Reta acts on several metabolic pathways at once, while most GLP-1 medications focus on one, though both reduce appetite and support blood sugar control.
The body defends its previous weight by slowing metabolism and increasing appetite, a response that medical therapies help counter.
They work best alongside balanced nutrition and activity, which the therapies make far easier by reducing hunger and cravings.
When prescribed and monitored by a physician, these medications have a well-studied safety profile, and dosing is managed carefully.
Candidacy depends on your health history, testing, and goals, which is why care begins with a physician evaluation.
Why Choose NexGen Health
NexGen Health treats weight loss as a metabolic and hormonal challenge, not a test of discipline. Under Dr. Petros, patients receive physician-guided care, precise testing, and modern therapies in one Silicon Valley practice. Located in San Jose and serving Los Gatos, Cupertino, Mountain View, and beyond, the team supports you from first visit through long-term maintenance.
Rethink Weight Loss in San Jose
If you are ready to approach weight in a way that fits your biology, contact NexGen Health in San Jose to schedule a consultation, call the practice, or book online.
Disclaimer: The information on this page is for educational purposes and is not a substitute for individualized medical advice, diagnosis, or treatment. Candidacy, therapies, and outcomes are determined during consultation, and individual results vary. Some therapies referenced may be provided on an off-label or investigational basis under physician supervision.