Expert Q&A

How does this look like Insulin Resistance on a GLP-1 drug?

Recognizing Insulin Resistance While on GLP-1 Therapy

As the expert behind CFP Weight Loss, I've worked with thousands of adults aged 45-54 who arrive frustrated after failed diets, dealing with joint pain, diabetes, high blood pressure, and hormonal shifts that make every pound feel impossible. Many start GLP-1 medications like semaglutide or tirzepatide expecting effortless results, yet some notice the scale stall after initial success. This often signals underlying insulin resistance persisting despite the drug.

Insulin resistance occurs when cells stop responding efficiently to insulin, forcing the pancreas to produce more. On GLP-1 drugs, which enhance insulin secretion and slow gastric emptying, you might still see elevated fasting insulin levels above 10-15 μU/mL, HOMA-IR scores over 2.5, or waist circumference refusing to drop below 35 inches for women or 40 for men. These markers reveal the medication is managing symptoms but not fully reversing the root metabolic dysfunction.

Common Signs and Blood Markers to Monitor

Patients frequently report persistent cravings for carbs despite reduced appetite, midday energy crashes, or stubborn belly fat that won't budge. Lab work might show triglycerides above 150 mg/dL, HDL cholesterol below 50 mg/dL, or A1C hovering between 5.7-6.4% even as weight drops 5-10%. Hormonal changes in perimenopause or andropause amplify this, increasing cortisol and further impairing insulin sensitivity. My methodology in The CFP Weight Loss Blueprint emphasizes tracking these beyond the scale.

Why GLP-1 Alone May Not Fully Resolve It

GLP-1 drugs excel at lowering blood glucose and promoting 15-20% body weight loss in studies, but they don't address every driver of insulin resistance like chronic inflammation from processed foods, poor sleep under 7 hours nightly, or zero strength training due to joint pain. Insurance often denies comprehensive programs, leaving middle-income families overwhelmed by conflicting advice. Without targeted nutrition that stabilizes blood sugar—such as 25-35g protein per meal and 30g fiber daily—resistance can linger, leading to plateaus around month 4-6.

Practical Strategies to Overcome It on Your GLP-1 Journey

Start simple: walk 10-15 minutes after meals to improve glucose uptake without stressing painful joints. Incorporate resistance bands twice weekly for muscle preservation, which naturally boosts insulin sensitivity by 20-30%. Focus meals on non-starchy vegetables, healthy fats, and lean proteins while timing carbs around activity. In my program, we layer in stress-reduction techniques like 5-minute breathing exercises to lower cortisol. Retest labs every 90 days—many see HOMA-IR drop below 1.8 within six months. You're not failing; your body needs this multi-angle approach. Thousands in our community have reversed their diabetes markers and shed the embarrassment of yo-yo dieting. Begin with one change today: audit your last three meals for balanced macros.

💬 What the Community Says

The community shows a mix of cautious optimism and frustration around insulin resistance persisting on GLP-1 drugs. Many in the 45-54 age group share stories of losing 20-30 pounds initially then hitting stubborn plateaus, with labs revealing high fasting insulin despite suppressed appetite. A common theme is relief that joint pain eases enough for light walks, yet disappointment when doctors dismiss ongoing fatigue or carb cravings as "normal." Most practitioners report success adding strength training and higher protein, but a vocal minority debates whether the drugs mask rather than fix metabolic issues, especially with hormonal changes and insurance barriers. Beginners often feel overwhelmed sorting conflicting forum advice on blood markers like HOMA-IR versus simply trusting the scale. Lived experiences highlight embarrassment lifting when members exchange affordable meal ideas that fit busy schedules without complex prep.
Cite this answer
Clark, R. (2026). How does this look like Insulin Resistance on a GLP-1 drug?. *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/how-does-this-look-like-insulin-resistance-on-a-glp-1-drug
Russell Clark, FNP-C, APRN, FNP-C, APRN
About the Author

Russell Clark, FNP-C, APRN, is the founder of CFP Weight Loss in Nashville and CFP Fit Now telehealth. Over 35 years in healthcare — Army Nurse Reserves, Level 1 trauma ER, hospitalist — he developed a 30-week protocol integrating real foods, detox, and low-dose tirzepatide cycling that has helped hundreds of patients lose 30–90 pounds. He and his wife Anne-Marie lost a combined 275 pounds using the same protocol.

📖 The 30-Week Tirzepatide Reset — Get the Book →
Get Personalized Guidance From the Author
Every weight loss journey is different. Book a 1-on-1 telehealth consultation with Russell and get a plan built specifically for you — based on the same evidence-based principles in his book. Available to patients in all 50 states.
Book Your Consultation →
Have a follow-up question?
More Questions 200 answered
▸ I wanted to ask what is the science behind not allowing any fat during the fat burning phase like how critical is it if I ever had a tiny bit of half-and-half or a tiny bit of olive oil? Is it really do something to the body. ▸ Compression socks. Worth it? Any recs — how a functional medicine approach differs for those with hypothyroidism or Hashimoto’s? ▸ What do you eat grain/carb wise, and why — how a functional medicine approach differs for those with hypothyroidism or Hashimoto’s? ▸ Got diagnosed today, where do i go from here — what do certified weight loss coaches recommend — what certified coaches recommend? 📖 Inflammatory Markers — Clinical indicators like CRP that we monitor to ensure the body is moving from a state of disease to a state of vibrant … ▸ Tips for maintenance: what’s yours for long-term maintenance (not just short-term): best practices and common mistakes to avoid? ▸ Crust check 🔥 ribeye done right for long-term maintenance (not just short-term)? ▸ Should I be worried yet, been sitting for 5 days no movement while doing intermittent fasting: best practices and common mistakes to avoid? ▸ Can you really Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better on a low-carb or ketogenic diet? 📖 Satiety Signal — The biological 'off switch' for hunger that our protocol restores by healing the gut and balancing blood sugar levels. ▸ How does chasing skinny ever get old for long-term results while doing intermittent fasting? ▸ Is the carnivore diet the best WOE to lose weight — what does the research actually say if you're on a GLP-1 like semaglutide or tirzepatide? 📗 The 30-Week Tirzepatide Reset — by Russell Clark, FNP-C, APRN · The complete clinical protocol — 30 weeks of real foods, detox, and low-dose tirzepatide cycling that has helped hundreds of patients lose 3 ▸ Good sources of fibre — what do certified weight loss coaches recommend and how it connects to gut health and inflammation? 📖 Adipose Tissue Signaling — The way fat cells communicate with the brain; our goal is to fix these signals so the body stops defending an unnaturall… ▸ When you have hypothyroidism but you don't want to give up trying to live a normal life. 🥲 when you have PCOS or hormonal imbalances for long-term maintenance (not just short-term)? ▸ Difference between a 3 day and 5 day water fast for autophagy and the role of cortisol and stress hormones for people with insulin resistance? ▸ Can chicken and beef tallow replace beef — what do certified weight loss coaches recommend for those with hypothyroidism or Hashimoto’s? ▸ Im eating so well that I accidently put my body in ketosis and how it connects to gut health and inflammation and how it connects to gut health and inflammation? ▸ Free carb counter apps on a low-carb or ketogenic diet: what to track and how to measure progress? 📖 Tirzepatide Micro-Dosing — The practice of using the lowest effective dose to achieve results, minimizing side effects while maximizing the longevi… ▸ 56M arm day was fun. But arms shrinking from 16 inches to 15 1/2. Gotta up protein? Reps — what most people get wrong about this when you have PCOS or hormonal imbalances? ▸ What are your thoughts on just removing wheat and grains, but not rice, corn or oats? Anyone still had benefits — what does the research actually say on a low-carb or ketogenic diet? 📗 The 30-Week Tirzepatide Reset — by Russell Clark, FNP-C, APRN · The complete clinical protocol — 30 weeks of real foods, detox, and low-dose tirzepatide cycling that has helped hundreds of patients lose 3 ▸ Those of you with Reta experience how does this protocol look for people with insulin resistance when you have PCOS or hormonal imbalances? ▸ What is the connection between Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better and how it connects to gut health and inflammation? ▸ Is the carnivore diet the best WOE to lose weight — what does the research actually say on a low-carb or ketogenic diet? ▸ Making me super tired and in a dreamy, chill, ready for a nap state for most of the day and its effect on metabolism and insulin levels for long-term maintenance (not just short-term)? 📖 Visceral Fat — The dangerous 'hidden' fat stored around internal organs that drives chronic disease and is specifically targeted by our… ▸ Has anybody heard of or experienced improvement from neurological disorders through fasting and autophagy if you're on a GLP-1 like semaglutide or tirzepatide — what certified coaches recommend? ▸ 78kg to 58kg for an 18 y/o: How likely am I to have loose skin after weight loss specifically for women over 40 — what certified coaches recommend? ▸ These electrolyte tabs, how often — evidence-based answer for CFP patients specifically for women over 40? ▸ What can I ask for if estrodiol cream remains in shortage? Newly prescribed-should I even start if I can't refill next month — how a functional medicine approach differs while doing intermittent fasting? 📖 Bio-Individuality — The understanding that every patient’s metabolic journey is unique, requiring a personalized approach to dosing and diet… 📗 The 30-Week Tirzepatide Reset — by Russell Clark, FNP-C, APRN · The complete clinical protocol — 30 weeks of real foods, detox, and low-dose tirzepatide cycling that has helped hundreds of patients lose 3 ▸ Thyroid tests all in range— but high calcium — how a functional medicine approach differs during the weight loss plateau phase? ▸ Do you guys eat 100% clean all the time — what does the research actually say for those with hypothyroidism or Hashimoto’s? ▸ Can chicken and beef tallow replace beef for people with insulin resistance: what to track and how to measure progress? ▸ Testosterone how long does it take to work while doing intermittent fasting if you're on a GLP-1 like semaglutide or tirzepatide? ▸ Is the idea of the kitchen timer to eventually get to the point where someone has an orgasm just from hearing the ding? Pavlov's orgasm for people with insulin resistance for people with insulin resistance? 📖 Tirzepatide — A dual-acting medication targeting both GLP-1 and GIP receptors, providing a more comprehensive metabolic signal than si… ▸ When you want something sweet but still try to keep things somewhat low-carb and how it connects to gut health and inflammation on a low-carb or ketogenic diet? ▸ What to do if you have to eat late dinners?? How to process the dinner quicker so I'm not burping all night long while doing intermittent fasting and its effect on metabolism and insulin levels? ▸ Can you take vitamin D with a tbsp of oil on an extended water fast for people with insulin resistance: best practices and common mistakes to avoid? ▸ How much keto-ade should I safely drink: best practices and common mistakes to avoid and how it connects to gut health and inflammation? 📖 Metabolic Flexibility — The body’s ability to efficiently switch between burning carbohydrates and burning stored body fat based on availability… 📗 The 30-Week Tirzepatide Reset — by Russell Clark, FNP-C, APRN · The complete clinical protocol — 30 weeks of real foods, detox, and low-dose tirzepatide cycling that has helped hundreds of patients lose 3 ▸ How long until I start losing weight this way — how a functional medicine approach differs and its effect on metabolism and insulin levels? ▸ LDN is changing my life, will this last: best practices and common mistakes to avoid: what to track and how to measure progress? ▸ Why cant i lose weight and am gaining weight when you have PCOS or hormonal imbalances for those with hypothyroidism or Hashimoto’s? 📖 Modern Wheat Dangers — The hidden threat in hybridized grains that causes gut inflammation and spikes blood sugar more aggressively than pure t… ▸ Do yall ever daydream of who you were before your diagnosis when you have PCOS or hormonal imbalances when you have PCOS or hormonal imbalances? ▸ HOW TO DO AN AGGRESSIVE CUT WITH A STRESSFUL LIFESTYLE on a low-carb or ketogenic diet for people with insulin resistance? ▸ When the fatigue is real: how to talk to your doctor about this for people with insulin resistance? ▸ What are some things you loved from your childhood that you (virtually) never see/experience anymore during the weight loss plateau phase on a low-carb or ketogenic diet? ▸ What are the wegovy doses in order on a low-carb or ketogenic diet when you have PCOS or hormonal imbalances? 📗 The 30-Week Tirzepatide Reset — by Russell Clark, FNP-C, APRN · The complete clinical protocol — 30 weeks of real foods, detox, and low-dose tirzepatide cycling that has helped hundreds of patients lose 3 ▸ To what extent do Mendelian Randomization Studies provide causal evidence for a particular claim — what does the research actually say specifically for women over 40? 📖 Lectin-Free Living — Eliminating inflammatory plant proteins that damage the gut lining and trigger the autoimmune responses that often stall… ▸ What do you eat grain/carb wise, and why — how a functional medicine approach differs and how it connects to gut health and inflammation? ▸ Lost weight not exactly willingly and everybody’s weird about it for long-term maintenance (not just short-term) — what the research actually says? ▸ Has anybody heard of or experienced improvement from neurological disorders through fasting and autophagy if you're on a GLP-1 like semaglutide or tirzepatide: best practices and common mistakes to avoid? ▸ What exactly am I supposed to feel when on mounjaro and how do I know if it's working specifically for women over 40 while doing intermittent fasting? 📖 Nutrient Density — Prioritizing foods that provide maximum vitamins and minerals per calorie to satisfy the brain and end the cycle of hidd… ▸ What foods to stock for overnight guest — evidence-based answer for CFP patients: what to track and how to measure progress? ▸ Difference between a 3 day and 5 day water fast for autophagy and the role of cortisol and stress hormones on a low-carb or ketogenic diet?