Expert Q&A

Is insulin resistance not taught in Med School and its effect on metabolism and insulin levels while doing intermittent fasting?

The Gap in Medical Education on Insulin Resistance

In over 35 years of clinical practice—from Army Nurse Reserves to Level 1 trauma and hospitalist work—I’ve seen the same pattern: insulin resistance gets only a few lectures in med school. Curriculums emphasize acute care, pharmaceuticals, and symptom management far more than the root metabolic dysfunction driving obesity, diabetes, and hormonal imbalance. This leaves most physicians unprepared to explain how chronic high insulin keeps patients stuck despite calorie restriction or exercise. The result? Patients like you, aged 45-54, battling joint pain, failed diets, and conflicting nutrition advice, rarely hear that fixing insulin resistance is the true path to sustainable weight loss.

How Insulin Resistance Disrupts Metabolism During Intermittent Fasting

When cells become resistant to insulin, your pancreas pumps out more to force glucose inside. This creates hyperinsulinemia that locks fat in storage and slows metabolism. During intermittent fasting, the goal is to lower insulin so your body taps fat stores and restores metabolic flexibility. Yet with untreated insulin resistance, fasting windows trigger stress hormones instead of fat burning, leading to fatigue, cravings, and stalled progress. In our 30-Week Tirzepatide Reset, we address this directly: low-dose tirzepatide cycling reduces insulin demand while a lectin-free low-carb diet with 221 real-food recipes removes inflammatory triggers like grains that worsen resistance. Patients see fasting insulin drop from 18-25 uIU/mL to under 8 within 10-12 weeks.

The 30-Week Tirzepatide Reset Protocol for Lasting Metabolic Freedom

My book, The 30-Week Tirzepatide Reset, uses three 70-day cycles built around smart medication cycling, not dependency. We pair one box of low-dose tirzepatide with targeted Drops (Brown Detox for toxin burden, Blue for hunger control), Japanese-style walking intervals that improve insulin sensitivity without joint stress, red light therapy, and chaotic intermittent fasting in maintenance. The 69 Transformation Steps give you a daily roadmap—no complex meal plans required. This system healed my wife Anne-Marie and me after we lost a combined 275 pounds. A patient like John, 60 with Type 2 diabetes (A1C 7.8), dropped 40 pounds, normalized his A1C to 6.2, and got off two medications by week 30. He maintains with the habits he built, proving metabolic freedom beats medication dependency.

Practical Steps to Reverse Insulin Resistance While Fasting

Start by tracking fasting insulin and HOMA-IR, not just glucose. Eliminate lectins and ultra-processed carbs for 14 days before extending fasting windows from 12 to 18 hours. Use our Pink Drops to support fat mobilization and walk 20-30 minutes post-meal in a Japanese interval pattern (slow-fast-slow). Focus on non-scale victories: better energy, looser clothes, improved blood pressure. This approach avoids the two biggest mistakes—relying on medication alone or chasing quick fixes—so you build the new normal that keeps weight off long-term. True, lasting weight loss comes from restoring your body’s ability to regulate itself when modern obstacles are removed. That mindset shift changes everything.

💬 What the Community Says

Patients in online forums frequently express frustration that their doctors never discussed insulin resistance beyond basic diabetes management. Many in the 45-54 age group report being told to "just eat less and move more" while experiencing stalled weight loss during intermittent fasting attempts. A common theme is surprise upon learning how high fasting insulin prevents fat burning; several describe initial fasting struggles like headaches and rebound hunger that improved after adopting lower-carb, anti-inflammatory approaches. The community is split on tirzepatide—some praise short-term cycling paired with lifestyle changes for breaking plateaus, while others worry about long-term dependency or side effects. Success stories often highlight measurable lab improvements and sustained maintenance through walking routines and real-food protocols, though insurance coverage barriers and skepticism from prior diet failures remain frequent pain points. Practitioners note that those who track both scale and non-scale victories tend to stick with changes longer.
Cite this answer
Clark, R. (2026). Is insulin resistance not taught in Med School and its effect on metabolism and . *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/is-insulin-resistance-not-taught-in-med-school-and-its-effect-on-metabolism-and-insulin-levels-while-doing-intermittent-fasting
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
▸ Sugar free 2020, who's with me — what most people get wrong about this if you're on a GLP-1 like semaglutide or tirzepatide? ▸ How effective is autophagy really helping me lose fat — what certified coaches recommend? ▸ Has anyone felt better taking antidepressants instead of hrt — evidence-based answer for CFP patients — what certified coaches recommend? ▸ 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? 📖 Strategic Fat Loading — A critical 48-hour phase at the start of the reset where we prime the body with healthy fats to trigger the transition f… ▸ 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: what to track and how to measure progress? ▸ Is lime water (but sipped throughout the day) ok with autophagy — how a functional medicine approach differs for people with insulin resistance? ▸ If a random dance partner app existed .. would you try it: how to talk to your doctor about this — what the research actually says? ▸ Can autophagy regenerate muscle during physically active prolonged fast and how it connects to gut health and inflammation and its effect on metabolism and insulin levels? 📖 Hashimoto’s Success — Achieving weight loss and reduced inflammation in thyroid patients by removing dietary triggers like lectins and modern … ▸ When the fatigue is real: how to talk to your doctor about this for people with insulin resistance? ▸ Who still goes to steeplechase — what do certified weight loss coaches recommend for long-term maintenance (not just short-term)? 📗 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 ▸ 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? ▸ Diabetics with TPN (IV nutrition experience) and the role of cortisol and stress hormones on a low-carb or ketogenic diet? ▸ How many were first diagnosed with OCD if you're on a GLP-1 like semaglutide or tirzepatide on a low-carb or ketogenic diet? ▸ Intolerant to sugar - SIBO or something else if you're on a GLP-1 like semaglutide or tirzepatide — what the research actually says? 📖 Metabolic Flexibility — The body’s ability to efficiently switch between burning carbohydrates and burning stored body fat based on availability… ▸ Those of you with Reta experience how does this protocol look for people with insulin resistance when you have PCOS or hormonal imbalances? ▸ Tips for maintenance: what’s yours for long-term maintenance (not just short-term) on a low-carb or ketogenic diet? ▸ Have you seen this? Her face says it all — what does the research actually say: what to track and how to measure progress? ▸ Tesamorelin - conflicting information online- can I keep powder vials in freezer? Can I keep reconstituted vials in fridge — what do certified weight loss coaches recommend for those with hypothyroidism or Hashimoto’s? 📗 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 ▸ Im eating so well that I accidently put my body in ketosis and how it connects to gut health and inflammation: best practices and common mistakes to avoid? ▸ What foods to stock for overnight guest — evidence-based answer for CFP patients: what to track and how to measure progress? ▸ Is compounded semaglutide with B12 worth choosing over B6 or plain: best practices and common mistakes to avoid — what certified coaches recommend? 📖 Phase 1: Priming — The first 48 hours of a 70-day cycle focused on high-fat intake to prevent the brain from triggering a starvation respon… ▸ Exercise — when and what kind while fasting, and does it enhance autophagy — how a functional medicine approach differs specifically for women over 40? ▸ I am on my second week of mounjaro (2.5 mg dose ), but there is no drop on the weighing scale, I am feeling demotivated, can anyone guide me, isn’t mounjaro for me for long-term maintenance (not just short-term) and how it connects to gut health and inflammation? ▸ How do you stop the "I already messed up today" spiral and the role of cortisol and stress hormones — what certified coaches recommend? 📖 GIP (Gastric Inhibitory Polypeptide) — A hormone that, when combined with GLP-1, enhances the body’s ability to break down fat and manage blood sugar levels mo… ▸ Does the fear of gaining ever go away for those with hypothyroidism or Hashimoto's 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? ▸ Good calorie amount? Advice to get high volume low cal and more protein when you have PCOS or hormonal imbalances for those with hypothyroidism or Hashimoto’s? ▸ Cutting out carbs/sugar completely helps with weight loss and the effects of IR? Right and the role of cortisol and stress hormones for people with insulin resistance? 📗 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 ▸ 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? ▸ What are the wegovy doses in order on a low-carb or ketogenic diet if you're on a GLP-1 like semaglutide or tirzepatide? ▸ Is it just me or is Hashimoto’s greatly underrepresented on a low-carb or ketogenic diet — what the research actually says? 📖 Amylopectin A — The specific starch found in modern wheat that causes rapid, dangerous spikes in blood glucose and promotes belly fat st… ▸ 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? ▸ Were any of you guys fans of Journey? How big were they when you have PCOS or hormonal imbalances? ▸ 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? ▸ Probiotics worked for a month then stopped. Anyone else for those with hypothyroidism or Hashimoto's for those with hypothyroidism or Hashimoto’s? 📖 30-Week Tirzepatide Reset — Our signature protocol using a single 60 mg box of medication cycled over 30 weeks to achieve lasting metabolic transfor… ▸ Does mental health predict diabetes as much as BMI? Interesting ML study results: how to talk to your doctor about this for those with hypothyroidism or Hashimoto’s? ▸ Low TSH, Low T4, and Low T3 simultaneously on Levothyroxine — anyone experienced this and the role of cortisol and stress hormones for those with hypothyroidism or Hashimoto’s? ▸ Does okra water actually help gut issues: what to track and how to measure progress — 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 ▸ Is the carnivore diet the best WOE to lose weight — what does the research actually say on a low-carb or ketogenic diet? 📖 Metabolic Reset — The process of retraining your body to utilize stored fat for fuel and regulating hunger hormones so you can maintain yo… ▸ 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? ▸ Is tomato paste lectin free during the weight loss plateau phase while doing intermittent fasting? ▸ Omnipod. Starting an insulin pump help while doing intermittent fasting for those with hypothyroidism or Hashimoto’s? ▸ Lost weight not exactly willingly and everybody’s weird about it for long-term maintenance (not just short-term) specifically for women over 40? ▸ 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? ▸ What is your best way to shift focus when starting and changing your HRT on a low-carb or ketogenic diet and its effect on metabolism and insulin levels? 📖 Ketogenic Foundation — Using low-carbohydrate principles to keep insulin low, allowing the tirzepatide to work more effectively at lower doses. ▸ I sometimes feel like people only talk about the obvious symptoms like irregular periods or weight gain, but the fatigue can be just as overwhelming. Has anyone else felt completely drained even: 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 ▸ 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? ▸ If a random dance partner app existed .. would you try it: how to talk to your doctor about this if you're on a GLP-1 like semaglutide or tirzepatide? ▸ 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 on a low-carb or ketogenic diet? ▸ Can you really Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better on a low-carb or ketogenic diet?