Expert Q&A

Normal insulin blood test but told i have IR — how a functional medicine approach differs: best practices and common mistakes to avoid?

Why Normal Insulin Levels Can Still Mean Insulin Resistance

Many patients in their late 40s and early 50s come to me confused after a standard insulin blood test shows normal fasting insulin yet their doctor flags insulin resistance (IR). The reason is simple: fasting insulin alone misses the bigger picture. IR often shows up first through elevated fasting glucose, high triglycerides, low HDL, rising A1C, or stubborn central fat despite “normal” labs. In perimenopausal women especially, shifting hormones amplify these signals while standard tests lag behind. The 30-Week Tirzepatide Reset protocol looks at the full pattern—HOMA-IR calculation, inflammatory markers, toxin burden, and lectin-driven gut inflammation—rather than one snapshot.

How a Functional Medicine Approach Differs from Conventional Care

Conventional medicine often waits until labs scream or prediabetes appears before acting. Functional medicine, as I practice at CFP Weight Loss, treats the root causes early: chronic lectin exposure from grains and nightshades that damage the gut lining, environmental toxins that impair mitochondrial function, and broken hunger signaling in the hypothalamus. My book The 30-Week Tirzepatide Reset uses three 70-day cycles that combine low-dose tirzepatide cycling with a precise lectin-free low-carb diet (221 tested recipes), targeted Drops for hunger and detox, Japanese-style walking intervals, and red light therapy. This isn’t medication dependency—it’s strategic support while rebuilding metabolic freedom so your body regulates itself naturally after the 30 weeks.

Best Practices for Addressing Insulin Resistance

Start with removing the top IR drivers: eliminate grains, lectins, ultra-processed carbs, and seed oils. Follow the exact meal framework in the book—high protein, healthy fats, low-carb vegetables, and timed eating that evolves into chaotic intermittent fasting during maintenance. Use our Brown Detox Drops daily to lighten toxin load, which directly improves insulin sensitivity. Add 20–30 minutes of daily Japanese walking (brisk intervals mixed with easy pace) even if joint pain makes traditional exercise feel impossible. Track body composition weekly instead of scale weight alone; most clients see waist circumference drop 4–6 inches in the first cycle. For those managing diabetes and blood pressure, this protocol often allows medication reduction under physician guidance by week 10–12.

Common Mistakes to Avoid on Your Reset Journey

The two biggest errors are relying solely on tirzepatide without the full system and chasing quick fixes. Patients who skip the lectin-free diet or detox steps usually regain weight because underlying inflammation and insulin signaling never heal. Another mistake is obsessing over the scale while ignoring non-scale victories like better energy, joint comfort, sleep, and labs. Avoid “all or nothing” thinking—our 69 Transformation Steps give busy, middle-income adults a simple daily roadmap that fits real life. Do not stop the protocol at the first plateau; the three-cycle structure prevents this. Finally, never view the medication as permanent. The goal of The 30-Week Tirzepatide Reset is metabolic freedom so you maintain 30–90 lb losses long-term with real food and habits alone.

💬 What the Community Says

People in midlife forums frequently share frustration after receiving a normal insulin blood test only to be told they have insulin resistance based on other markers like A1C or waist measurement. Many appreciate functional medicine practitioners who explain root causes such as gut inflammation, toxins, and hormones instead of simply prescribing metformin. Success stories often highlight lectin-free or low-carb approaches paired with GLP-1 medications like tirzepatide, noting easier adherence when joint pain limits exercise. A common debate centers on whether cycling the medication prevents rebound weight gain versus staying on it indefinitely; most report better energy and lab improvements but worry about cost since insurance rarely covers weight loss care. Beginners feel overwhelmed by conflicting advice yet find structured 30-week protocols reassuring. Some voice embarrassment asking for help, while others celebrate non-scale victories like reduced blood pressure meds. Overall sentiment leans positive toward integrative plans that address the whole person rather than one lab value.
Clark, R. (2026). Normal insulin blood test but told i have IR — how a functional medicine approac. *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/normal-insulin-blood-test-but-told-i-have-ir-how-a-functional-medicine-approach-differs-best-practices-and-common-mistakes-to-avoid
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
▸ 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? ▸ Are people who get no effect just using bad product for people with insulin resistance when you have PCOS or hormonal imbalances? ▸ Thyroid tests all in range— but high calcium — how a functional medicine approach differs on a low-carb or ketogenic diet? ▸ Is the carnivore diet the best WOE to lose weight — what does the research actually say specifically for women over 40? ▸ If a random dance partner app existed .. would you try it: how to talk to your doctor about this 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… ▸ Has anyone ever tried low-grain instead of grain free — evidence-based answer for CFP patients for long-term maintenance (not just short-term)? ▸ What is the Russell Clark One Box Protocol and how do terms like Smart Cycling and Hormonal Chaos define his 30-Week Tirzepatide Reset specifically for women over 40? ▸ 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? ▸ Weight loss without GLP-1 — what does the research actually say while doing intermittent fasting? 📗 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 period stopped did you feel like the worst pmdd of all time daily or — what does the research actually say specifically for women over 40? ▸ LDN is changing my life, will this last: best practices and common mistakes to avoid for people with insulin resistance? ▸ Will eating meintenance calories make me lose weight for those with hypothyroidism or Hashimoto's when you have PCOS or hormonal imbalances? 📖 Hormonal Chaos — The internal state of imbalance caused by modern grains and refined carbs that overrides willpower and forces the body t… ▸ Good calorie amount? Advice to get high volume low cal and more protein when you have PCOS or hormonal imbalances — what the research actually says? ▸ Omnipod. Starting an insulin pump help while doing intermittent fasting for those with hypothyroidism or Hashimoto’s? ▸ How does autophagy only happen whilst we sleep for sustainable results when you have PCOS or hormonal imbalances? ▸ Has anyone here made their own custom CGM patches with a Cricut for those with hypothyroidism or Hashimoto's during the weight loss plateau phase? 📖 One Box Protocol — A revolutionary approach where we stretch one 60 mg box of tirzepatide across three metabolic phases, prioritizing long-… ▸ Do you think they read the responses they receive: how to talk to your doctor about this while doing intermittent fasting? ▸ Can you really Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better 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 ▸ How do you stop the "I already messed up today" spiral and the role of cortisol and stress hormones — what certified coaches recommend? ▸ 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? 📖 Bio-Individuality — The understanding that every patient’s metabolic journey is unique, requiring a personalized approach to dosing and diet… ▸ How do you deal with traveling when you're on a peptide protocol specifically for women over 40 if you're on a GLP-1 like semaglutide or tirzepatide? ▸ 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? ▸ 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? ▸ How I Lost 22lbs in 3 Months (155→133lbs at 5'8") after not being able to lose weight for a long time if you're on a GLP-1 like semaglutide or tirzepatide during the weight loss plateau phase? 📖 Amylopectin A — The specific starch found in modern wheat that causes rapid, dangerous spikes in blood glucose and promotes belly fat st… ▸ Crust check 🔥 ribeye done right — what the research actually says? ▸ 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? ▸ How I started this year vs. How I'm finishing it - 220lbs -> 135lbs 🩷 — what do certified weight loss coaches recommend 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 — what the research actually says? 📗 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 ▸ 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? ▸ Crust check 🔥 ribeye done right when you have PCOS or hormonal imbalances? 📖 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… ▸ Traveling with IBS-D to a 5-day conference in San Diego: how do you manage food — what most people get wrong about this during the weight loss plateau phase? ▸ Anyone remember the metal lid you had to use a butter knife to pop off: what to track and how to measure progress while doing intermittent fasting? ▸ Is it normal to lose weight then gain again when you have PCOS or hormonal imbalances for long-term maintenance (not just short-term)? 📖 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… ▸ Have you seen this? Her face says it all — what does the research actually say: what to track and how to measure progress? ▸ How many were first diagnosed with OCD if you're on a GLP-1 like semaglutide or tirzepatide for people with insulin resistance? ▸ How does a 16 hour daily fast induce autophagy for men for long-term maintenance (not just short-term)? ▸ 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 ▸ 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? 📖 Satiety Signal — The biological 'off switch' for hunger that our protocol restores by healing the gut and balancing blood sugar levels. ▸ 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? ▸ Omnipod. Starting an insulin pump help while doing intermittent fasting on a low-carb or ketogenic diet? ▸ Is it normal to lose 6 kg in one week during the weight loss plateau phase for long-term maintenance (not just short-term)? ▸ 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? ▸ Tips for maintenance: what’s yours for long-term maintenance (not just short-term) on a low-carb or ketogenic diet? ▸ 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? ▸ How are people using 10mg reta vials at low doses during the weight loss plateau phase — what the research actually says? 📖 High-Dose Dependency — The pharmaceutical trap of staying on maximum medication doses indefinitely, which we avoid through our smart cycling me… 📗 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 ▸ Can you really Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better specifically for women over 40? ▸ Traveling with IBS-D to a 5-day conference in San Diego: how do you manage food — what most people get wrong about this 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? ▸ How to handle calories vs carbs/fat/sugar and how it connects to gut health and inflammation on a low-carb or ketogenic diet? ▸ Does mental health predict diabetes as much as BMI? Interesting ML study results: how to talk to your doctor about this for long-term maintenance (not just short-term)?