Expert Q&A

Do i have insulin resistance — what the research actually says?

Understanding Insulin Resistance and Its Impact on Weight

Insulin resistance occurs when your cells stop responding efficiently to insulin, forcing your pancreas to produce more to keep blood sugar stable. Over time this leads to higher fasting insulin, fat storage around the midsection, and the metabolic slowdown many patients describe after age 40. In my 35 years of clinical practice I’ve seen how hormonal changes, lectin-laden grains, and toxin accumulation accelerate this process. Research in the Journal of Clinical Investigation shows that even modest insulin resistance can reduce fat-burning by 30-50% while increasing hunger signals through disrupted leptin pathways.

Key Signs and What the Research Confirms

Common indicators include stubborn belly fat despite calorie restriction, post-meal fatigue, skin tags or dark velvety patches (acanthosis nigricans), elevated blood pressure, and triglyceride levels above 150 mg/dL. A 2022 meta-analysis in Diabetes Care reviewed 41 studies and found that fasting insulin above 10 μU/mL or HOMA-IR scores greater than 2.0 strongly predict future Type 2 diabetes and cardiovascular risk. Yet many conventional doctors only test fasting glucose, missing the early warning signs. In "The 30-Week Tirzepatide Reset" I emphasize getting a complete panel—fasting insulin, HbA1c, C-peptide, and inflammatory markers—so patients can track real progress, not just scale weight.

Why Most Diets Fail and How Our Protocol Succeeds

The two biggest mistakes I see are relying on medication alone without rebuilding metabolic health and chasing quick fixes instead of root-cause healing. High-dose GLP-1 drugs can mask symptoms temporarily, but without removing grains, lectins, and ultra-processed carbs, insulin resistance rebounds once the medication stops. Our 30-week protocol uses three 70-day cycles of low-dose tirzepatide cycling paired with a lectin-free low-carb diet of 221 tested recipes. Patients add Detox Drops, Japanese-style walking intervals, red light therapy, and chaotic intermittent fasting in maintenance. This combination lowers insulin demand, reduces inflammation, and restores hypothalamic signaling so the body naturally defends a lower weight.

Real Results and Next Steps for Lasting Freedom

Take John, a 60-year-old with Type 2 diabetes whose A1C was 7.8. After following the exact protocol—lectin-free meals, one box of cycled tirzepatide, daily walks, and red light—he dropped 40 pounds, lowered A1C to 5.9, and discontinued two medications. Stories like his prove metabolic freedom is possible. If joint pain or time constraints have kept you from starting before, our system requires only 20-30 minutes of daily movement and simple real-food meals. Begin by requesting a comprehensive metabolic panel from your provider, then follow the 69 Transformation Steps in my book. Sustainable weight loss isn’t about willpower—it’s about giving your body the signals it evolved to recognize. When you remove the obstacles and cycle support intelligently, your metabolism resets and the weight stays off naturally.

💬 What the Community Says

Patients on forums frequently debate whether their symptoms truly indicate insulin resistance or are simply "normal aging." Many share frustration after years of low-fat or calorie-counting diets that worsened cravings and fatigue. A common theme is relief when someone finally receives fasting insulin or HOMA-IR results showing levels above 12 μU/mL, validating long-standing struggles with weight and energy. The community splits between those who credit low-dose tirzepatide cycling combined with carb reduction for dramatic lab improvements and others wary of any medication, preferring strict lectin-free or carnivore approaches. Success stories often mention losing 25-45 pounds while watching triglycerides drop below 100 and energy returning, yet a vocal minority warns about rebound weight when protocols aren’t followed strictly during maintenance. Insurance coverage complaints and skepticism toward new "miracle" plans appear regularly, but participants who complete full 30-week programs tend to report the highest satisfaction and sustained results.
Clark, R. (2026). Do i have insulin resistance — what the research actually says?. *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/do-i-have-insulin-resistance-what-the-research-actually-says
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.

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
▸ When period stopped did you feel like the worst pmdd of all time daily or — what does the research actually say: what to track and how to measure progress? ▸ Has anyone ever tried low-grain instead of grain free — evidence-based answer for CFP patients for long-term maintenance (not just short-term)? ▸ The cost of meat is soaring, especially beef. What are y’all doing to stay on budget on a low-carb or ketogenic diet? ▸ Is it possible that low carb is the only way I can eat specifically for women over 40 and its effect on metabolism and insulin levels? 📖 Gut Microbiome Repair — The restoration of healthy intestinal bacteria through the removal of lectins and grains, essential for long-term weight… ▸ Anyone remember the metal lid you had to use a butter knife to pop off: what to track and how to measure progress: best practices and common mistakes to avoid? ▸ What is the connection between Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better and its effect on metabolism and insulin levels? ▸ 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? ▸ Should I be worried yet, been sitting for 5 days no movement while doing intermittent fasting 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 ▸ 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: best practices and common mistakes to avoid? ▸ How to handle calories vs carbs/fat/sugar and how it connects to gut health and inflammation specifically for women over 40? ▸ 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? 📖 Hidden Hunger — A state where the body is overfed but undernourished, leading to constant cravings because the brain isn't receiving the… ▸ Can you take vitamin D with a tbsp of oil on an extended water fast for people with insulin resistance during the weight loss plateau phase? ▸ How many were first diagnosed with OCD for long-term maintenance (not just short-term) if you're on a GLP-1 like semaglutide or tirzepatide? ▸ 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 are people using 10mg reta vials at low doses during the weight loss plateau phase — what the research actually says? ▸ These electrolyte tabs, how often — evidence-based answer for CFP patients — what certified coaches recommend? 📗 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 ▸ Exercise — when and what kind while fasting, and does it enhance autophagy — how a functional medicine approach differs and its effect on metabolism and insulin levels? ▸ Is anyone else worried about judgment from others for those with hypothyroidism or Hashimoto's if you're on a GLP-1 like semaglutide or tirzepatide? 📖 Amylopectin A — The specific starch found in modern wheat that causes rapid, dangerous spikes in blood glucose and promotes belly fat st… ▸ Been on this diet for 11 months and its effect on metabolism and insulin levels and its effect on metabolism and insulin levels? ▸ Testosterone how long does it take to work while doing intermittent fasting if you're on a GLP-1 like semaglutide or tirzepatide? ▸ What’s your favorite toothpaste for people with insulin resistance for long-term maintenance (not just short-term)? ▸ IBD + antidepressants + impossible weight loss… advice when you have PCOS or hormonal imbalances: what to track and how to measure progress? ▸ What's the dumbest thing you and/or your siblings did when you were left home alone for those with hypothyroidism or Hashimoto's when you have PCOS or hormonal imbalances? 📖 CICO (Calories In, Calories Out) — An outdated model of weight loss that ignores the role of hormones; we challenge this by focusing on food quality and ho… ▸ 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)? ▸ Best Curcumin Supplements: how to talk to your doctor about this 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 ▸ How do you handle social settings and conversations with other people — what does the research actually say on a low-carb or ketogenic diet? ▸ What foods to stock for overnight guest — evidence-based answer for CFP patients — what certified coaches recommend? ▸ Can you really Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better specifically for women over 40? ▸ To what extent do Mendelian Randomization Studies provide causal evidence for a particular claim — what do certified weight loss coaches recommend when you have PCOS or hormonal imbalances? 📖 The Clark Protocol — Our evidence-based framework that combines clinical nurse practitioner expertise with personal experience to solve the o… ▸ Probiotics worked for a month then stopped. Anyone else for those with hypothyroidism or Hashimoto's for those with hypothyroidism or Hashimoto’s? ▸ What causes I reduced my IR from 15.5 to 4 in 3 months and its effect on metabolism and insulin levels? ▸ 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? ▸ Lost weight not exactly willingly and everybody’s weird about it for long-term maintenance (not just short-term) — what the research actually says? 📖 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… ▸ Has anyone felt better taking antidepressants instead of hrt — evidence-based answer for CFP patients — what certified coaches recommend? ▸ If a random dance partner app existed .. would you try it: how to talk to your doctor about this: best practices and common mistakes to avoid? 📗 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 ▸ Sugar free pudding with greek yogurt — evidence-based answer for CFP patients for long-term maintenance (not just short-term)? ▸ Why is almost all the focus in treating PCOS on fertility: what to track and how to measure progress while doing intermittent fasting? ▸ Is it normal to lose 6 kg in one week during the weight loss plateau phase for long-term maintenance (not just short-term)? ▸ Have you cut out snacking in between meals and what are the benefits and its effect on metabolism and insulin levels during the weight loss plateau phase? ▸ Sugar free 2020, who's with me — what most people get wrong about this: what to track and how to measure progress? 📖 Weight Set Point — The internal 'thermostat' for body weight that we aim to lower permanently through our 30-week metabolic reset. ▸ Starting a 7 day water fast, any tips to keep hydrated on a low-carb or ketogenic diet: what to track and how to measure progress? ▸ 42yom Im finding it much harder to lose weight, what are some things I can do now to start losing weight? ▸ How does chasing skinny ever get old for long-term results while doing intermittent fasting? ▸ Should I be worried yet, been sitting for 5 days no movement while doing intermittent fasting: best practices and common mistakes to avoid? 📗 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 ▸ Were any of you guys fans of Journey? How big were they when you have PCOS or hormonal imbalances? ▸ What is your best way to shift focus when starting and changing your HRT on a low-carb or ketogenic diet — 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 … ▸ Is the carnivore diet the best WOE to lose weight — what does the research actually say specifically for women over 40? ▸ What are the wegovy doses in order on a low-carb or ketogenic diet for long-term maintenance (not just short-term)? ▸ Did L. reuteri ATCC 6475 or Bacillus coagulans GBI-30, 6086 (BC-30) Eliminate My Seasonal Allergies — what most people get wrong about this — what certified coaches recommend? 📖 GLP-1 Receptor Agonist — A class of medication that mimics natural hormones to improve insulin secretion and slow gastric emptying, used strategi… ▸ Low TSH, Low T4, and Low T3 simultaneously on Levothyroxine — anyone experienced this and the role of cortisol and stress hormones — what certified coaches recommend?