Expert Q&A

What would be the cause of insulin resistance: how to talk to your doctor about this

What Exactly Is Insulin Resistance?

Insulin resistance develops when your cells stop responding efficiently to insulin, the hormone that shuttles glucose from your bloodstream into cells for energy. As a result, your pancreas produces more insulin to compensate, leading to higher circulating levels that promote fat storage—especially around the midsection. For people aged 45-54 dealing with hormonal changes, this process accelerates weight gain and makes traditional diets fail. In my experience helping thousands through the CFP Weight Loss Method, addressing insulin resistance is often the missing link for those managing diabetes, high blood pressure, and joint pain that limits movement.

Primary Causes of Insulin Resistance

Several interconnected factors drive insulin resistance. Excess visceral fat releases inflammatory chemicals that impair insulin signaling. Chronic stress elevates cortisol, which raises blood sugar and promotes abdominal fat. Poor sleep—less than 7 hours nightly—disrupts hormones like leptin and ghrelin, increasing cravings for refined carbs. Hormonal shifts in perimenopause and menopause reduce estrogen, which normally protects insulin sensitivity. Diets high in processed sugars and seed oils further damage cell membranes. Genetics play a role, but lifestyle triggers are far more influential. In the CFP Weight Loss Method, we target these root causes rather than symptoms alone, helping patients reverse insulin resistance without expensive programs insurance won’t cover.

Recognizing Symptoms and When to Seek Help

Common signs include stubborn weight despite calorie restriction, constant fatigue after meals, sugar cravings, skin tags or dark velvety patches (acanthosis nigricans), elevated blood pressure, and difficulty losing even 5-10 pounds. If you’ve failed multiple diets and feel overwhelmed by conflicting advice, these point toward metabolic dysfunction. Don’t wait for a diabetes diagnosis—early intervention prevents progression. Track your fasting glucose, A1C, fasting insulin, and triglyceride-to-HDL ratio. Optimal fasting insulin is under 8 μU/mL; many doctors only flag it above 25.

How to Talk to Your Doctor About Insulin Resistance

Prepare for the visit. Bring a one-page summary: your symptoms timeline, food and sleep logs, previous lab results, and specific questions. Start the conversation clearly: “I’ve been struggling with weight gain despite efforts, and I suspect insulin resistance based on my symptoms and family history. Could we test my fasting insulin and discuss root causes?” Request expanded labs including fasting insulin, C-peptide, HbA1c, CRP, and a full hormone panel. If your doctor dismisses concerns, ask: “What would a normal fasting insulin level look like for preventing metabolic disease?” Share that you’re following an evidence-based approach like the CFP Weight Loss Method, which emphasizes real-food meal timing and gentle movement suitable for joint pain. This shows you’re proactive, not demanding. If needed, seek a functional or metabolic specialist. Many patients in our program successfully partner with their physicians after using these scripts, leading to better outcomes without shame or overwhelm.

Next Steps for Reversal

Focus on sustainable changes: prioritize protein and fiber at every meal, walk 20-30 minutes after dinner to improve glucose uptake, and manage stress with simple breathing techniques. These steps fit busy middle-income lifestyles and address the hormonal barriers many face after 45. Consistent application through the CFP Weight Loss Method typically improves insulin sensitivity within 8-12 weeks, often reducing medication needs under medical supervision.

💬 What the Community Says

The community shows a mix of frustration and cautious hope around discussing insulin resistance with doctors. Many in the 45-54 age group report past diets failing and feeling embarrassed about their weight, leading them to research symptoms independently before appointments. A common complaint is that primary care physicians often focus only on A1C and dismiss fasting insulin requests unless diabetes is already present. Most practitioners find success when they bring printed symptom trackers and specific lab requests, though some encounter resistance and end up seeking functional medicine providers. Lived experiences highlight how joint pain and time constraints make standard advice impractical, with users sharing that meal-timing and short walks help more than gym routines. A vocal minority debates whether doctors are adequately trained on midlife hormonal changes affecting metabolism, while others celebrate small wins like normalized blood pressure after advocating for comprehensive testing. Overall sentiment reflects determination to overcome conflicting nutrition information through better doctor communication.
Cite this answer
Clark, R. (2026). What would be the cause of insulin resistance: how to talk to your doctor about . *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/what-would-be-the-cause-of-insulin-resistance-how-to-talk-to-your-doctor-about-this
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
▸ Is GH really that good on a low-carb or ketogenic diet for people with insulin resistance? ▸ Can you tell a difference in my face — how a functional medicine approach differs 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 to track and how to measure progress? ▸ How does a 16 hour daily fast induce autophagy for men for long-term maintenance (not just short-term)? ▸ What a difference a year makes 🥰 during the weight loss plateau phase? ▸ 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 specifically for women over 40? 📖 Metabolic Efficiency — The state where your body processes fuel cleanly and maintains high energy levels without the need for constant snacking… ▸ 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 long-term maintenance (not just short-term)? ▸ When do you know to go to the hospital — evidence-based answer for CFP patients specifically for women over 40? 📗 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 ▸ 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 on a low-carb or ketogenic diet? ▸ What are some things you loved from your childhood that you (virtually) never see/experience anymore during the weight loss plateau phase — 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 — what certified coaches recommend? 📖 Cellular Detox — The process of clearing out metabolic waste and reducing cellular stress to allow for more efficient energy production a… ▸ When you want something sweet but still try to keep things somewhat low-carb and how it connects to gut health and inflammation for people with insulin resistance? ▸ Is this a good indicator of autophagy and how it connects to gut health and inflammation for those with hypothyroidism or Hashimoto’s? ▸ Does the weight loss journey has to be so miserable on a low-carb or ketogenic diet and its effect on metabolism and insulin levels? ▸ Does anyone else’s health anxiety get MUCH worse at night for those with hypothyroidism or Hashimoto's on a low-carb or ketogenic diet? ▸ Accidentally left my vials out overnight. Are they still good if you're on a GLP-1 like semaglutide or tirzepatide specifically for women over 40? 📗 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 ▸ Why is my psychiatrist recommending supplements — how a functional medicine approach differs if you're on a GLP-1 like semaglutide or tirzepatide? 📖 Metabolic Stall — A plateau in weight loss often caused by hidden inflammation or hormonal adaptation, which we break using our specific 7… ▸ How long does it take to Is Autophagy? 8 Amazing Benefits Of Fasting That Will Save Your Life while doing intermittent fasting? ▸ 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 specifically for women over 40? ▸ How I finally stopped crashing after workouts — the training structure that actually works with Hashimoto's specifically for women over 40 for long-term maintenance (not just short-term)? ▸ 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? ▸ 78kg to 58kg for an 18 y/o: How likely am I to have loose skin after weight loss and its effect on metabolism and insulin levels 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-… ▸ Accidentally left my vials out overnight. Are they still good if you're on a GLP-1 like semaglutide or tirzepatide for people with insulin resistance? ▸ Does autophogy start sooner if following a keto diet before a fast and the role of cortisol and stress hormones: best practices and common mistakes to avoid? ▸ What foods to stock for overnight guest — evidence-based answer for CFP patients specifically for women over 40? ▸ Who still goes to steeplechase — what do certified weight loss coaches recommend 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 ▸ When do you know to go to the hospital — evidence-based answer for CFP patients when you have PCOS or hormonal imbalances? 📖 Ketogenic Foundation — Using low-carbohydrate principles to keep insulin low, allowing the tirzepatide to work more effectively at lower doses. ▸ 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 people with insulin resistance? ▸ Probiotics worked for a month then stopped. Anyone else for those with hypothyroidism or Hashimoto's while doing intermittent fasting? ▸ IBD + antidepressants + impossible weight loss… advice when you have PCOS or hormonal imbalances while doing intermittent fasting? ▸ What foods to stock for overnight guest — evidence-based answer for CFP patients for people with insulin resistance? ▸ My weight loss progress so far as a 23 year male who stared eating less unhealthy and does little to moderate exercise. Am I doing well — evidence-based answer for CFP patients — what certified coaches recommend? ▸ What is your intermittent fasting schedule, what results are you seeing, and are you happy with it and its effect on metabolism and insulin levels and how it connects to gut health and inflammation? 📖 Gut-Brain Axis — The complex communication network between your digestive system and your brain that controls satiety, mood, and metaboli… ▸ What is your best way to shift focus when starting and changing your HRT on a low-carb or ketogenic diet: what to track and how to measure progress? 📗 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 do you know to go to the hospital when you have PCOS or hormonal imbalances? ▸ Is compounded semaglutide with B12 worth choosing over B6 or plain: best practices and common mistakes to avoid: best practices and common mistakes to avoid? 📖 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… ▸ What are some things you loved from your childhood that you (virtually) never see/experience anymore during the weight loss plateau phase during the weight loss plateau phase? ▸ Forgot to swab the vial with alcohol pad if you're on a GLP-1 like semaglutide or tirzepatide for people with insulin resistance? ▸ Sterilized soybean sprout — how a functional medicine approach differs and how it connects to gut health and inflammation? ▸ Is tomato paste lectin free during the weight loss plateau phase: best practices and common mistakes to avoid? 📖 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… ▸ How long was your withdrawal when you went sugarfree for those with hypothyroidism or Hashimoto's for those with hypothyroidism or Hashimoto’s? ▸ What is a ‘normal’ value for dawn phenomena for you for people with insulin resistance specifically for women over 40? ▸ 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 long-term maintenance (not just short-term)? 📖 GLP-1 Receptor Agonist — A class of medication that mimics natural hormones to improve insulin secretion and slow gastric emptying, used strategi… 📗 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 ▸ Finally connected the dots between my thyroid, gut issues, and brain fog - why don't doctors look at the whole picture specifically for women over 40 for people with insulin resistance? ▸ Could Nanotyrannus be a nest parasite specifically targeting Trex during the weight loss plateau phase? ▸ Is it normal to feel unhappy during weight loss when you have PCOS or hormonal imbalances while doing intermittent fasting? 📖 Metabolic Flexibility — The body’s ability to efficiently switch between burning carbohydrates and burning stored body fat based on availability… ▸ How many were first diagnosed with OCD for long-term maintenance (not just short-term) during the weight loss plateau phase? ▸ Is Emma Relief good for gut issues and the role of cortisol and stress hormones — what the research actually says? ▸ LDN is changing my life, will this last: best practices and common mistakes to avoid specifically for women over 40? 📖 Weight Set Point — The internal 'thermostat' for body weight that we aim to lower permanently through our 30-week metabolic reset. ▸ Will I ever be able to wear low rise jeans without being insecure: best practices and common mistakes to avoid when you have PCOS or hormonal imbalances?