Expert Q&A

How long have we known that diabetes can be cured by not eating any carbs? Can you guess on a low-carb or ketogenic diet for those with hypothyroidism or Hashimoto’s?

The Historical Roots of Carb Restriction for Diabetes

Physicians have recognized the power of carbohydrate elimination to manage and even reverse type 2 diabetes for over 150 years. In the 1860s, Dr. William Banting published his letter on corpulence, detailing how removing bread, sugar, and starches reversed his own obesity and metabolic symptoms. By the early 1900s, Dr. Frederick Allen’s starvation protocols and Dr. Elliott Joslin’s clinical work showed fasting and very-low-carb diets normalized blood glucose in diabetics. These findings predate insulin’s discovery in 1921. Modern validation arrived in the 1970s-80s with Dr. Robert Atkins and again in the 2000s through randomized trials demonstrating insulin resistance reversal, A1C drops of 1.5-2.0 points, and medication reduction within 12-16 weeks on ketogenic protocols.

Adapting Low-Carb and Ketogenic Diets for Hypothyroidism and Hashimoto’s

Patients with hypothyroidism or Hashimoto’s often fear restrictive diets will further suppress thyroid function. The truth is strategic low-carb eating can reduce autoimmune inflammation while supporting hormone conversion. In my book The 30-Week Tirzepatide Reset, we use a lectin-free, moderate-protein ketogenic template during the first 70-day cycle. This removes grains, nightshades, and processed carbs that trigger lectin inflammation and gut permeability—common drivers of Hashimoto’s flares. Typical starting macros are 20-40g net carbs, 1.2g protein per kg ideal body weight, and the remainder healthy fats from avocado, olive oil, and fatty fish.

Key safeguards include monitoring free T3, reverse T3, and TSH every 6-8 weeks. Many patients see improved energy and antibody reduction when combining this with our targeted Detox Drops and Japanese-style walking intervals. Avoid extreme long-term restriction below 20g carbs if thyroid labs decline; cycle in 50-75g carb days from approved vegetables during the reset’s maintenance phase.

Integrating Smart Tirzepatide Cycling for Lasting Metabolic Freedom

The biggest mistake is relying on medication alone. Our 30-week protocol cycles low-dose tirzepatide across three 70-day phases while rebuilding metabolic health through real-food meals from our 221-recipe guide. For a patient like John, who entered with A1C 7.8, 40 extra pounds, and concurrent hypothyroidism, the lectin-free plan plus weekly red light therapy dropped his A1C to 6.2 in ten weeks and normalized thyroid markers. He discontinued two diabetes medications and has maintained results for over two years using chaotic intermittent fasting.

Focus on non-scale victories: reduced joint pain, stable blood pressure, better sleep, and clothing fit. The 69 Transformation Steps provide a daily roadmap so beginners never feel overwhelmed. Sustainable success comes from restoring hypothalamic signaling and insulin sensitivity, not perpetual drug dependence.

Practical Starting Tips for Beginners

Begin with a 7-day prep phase eliminating all grains and sugars. Track body composition weekly rather than daily scale weight. Pair the diet with 20-minute daily walks, red light sessions, and our Blue Hunger Drops if needed. Consult your provider for thyroid medication adjustments. Thousands have lost 30-90 pounds and reversed metabolic disease following this exact system without insurance-covered programs or complex schedules.

💬 What the Community Says

The community shows strong interest in historical low-carb approaches for diabetes reversal, with many citing Banting’s 1860s work and recent studies confirming A1C improvements. Users with hypothyroidism or Hashimoto’s are divided: some report dramatic inflammation reduction and antibody drops on ketogenic diets within 8-12 weeks, while others describe initial TSH spikes or fatigue that resolved after adding targeted carbs or thyroid support. A vocal minority warns against very-low-carb long term without lab monitoring. Most appreciate protocols like the 30-Week Tirzepatide Reset that combine smart medication cycling, lectin-free meals, and simple habits. Beginners often share success stories of 25-50 pound losses alongside improved joint pain and energy, though insurance barriers and conflicting nutrition advice remain frequent frustrations. Lived experiences emphasize focusing on how one feels over the scale.
Clark, R. (2026). How long have we known that diabetes can be cured by not eating any carbs? Can y. *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/how-long-have-we-known-that-diabetes-can-be-cured-by-not-eating-any-carbs-can-you-guess-on-a-low-carb-or-ketogenic-diet-for-those-with-hypothyroidism-or-hashimoto-s
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
How the prices looking in your neck of the woods and how it connects to gut health and inflammation — what the research actually says? Opinions/Knowledge welcomed! Sub clinical hypothyroidism & perimenopause- what’s what — how a functional medicine approach differs and its effect on metabolism and insulin levels? Shot doesn’t feel like it’s going into skin - bad batch — what do certified weight loss coaches recommend on a low-carb or ketogenic diet? How the prices looking in your neck of the woods and its effect on metabolism and insulin levels on a low-carb or ketogenic diet? 📖 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… I’m looking into possibly going grain free and I was wondering if it was just as healthy as doing keto or paleo when you have PCOS or hormonal imbalances when you have PCOS or hormonal imbalances? Has anyone switched from brand name Premarin to the new recently released generic conjugated estrogens and feels like it is not working as well for those with hypothyroidism or Hashimoto's specifically for women over 40? Before being diagnosed, did we all assume everyone was this tired all the time — how a functional medicine approach differs on a low-carb or ketogenic diet? Any advice for starting maintenance specifically for women over 40 during the weight loss plateau phase? What finally worked for my PCOS — what most people get wrong about this: best practices and common mistakes to avoid? What do you do when you’re having a difficult time functioning- especially at work and the role of cortisol and stress hormones: what to track and how to measure progress? 📖 Hashimoto’s Success — Achieving weight loss and reduced inflammation in thyroid patients by removing dietary triggers like lectins and modern … 📗 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 do you do when you’re having a difficult time functioning- especially at work — evidence-based answer for CFP patients while doing intermittent fasting? What a year it has been if you're on a GLP-1 like semaglutide or tirzepatide when you have PCOS or hormonal imbalances? Will my face debloat with a low carb diet: what to track and how to measure progress if you're on a GLP-1 like semaglutide or tirzepatide? 📖 Gut Microbiome Repair — The restoration of healthy intestinal bacteria through the removal of lectins and grains, essential for long-term weight… Why does giving advice to others about mental health feel so much easier than following the same advice for yourself when you have PCOS or hormonal imbalances while doing intermittent fasting? Why does Guyz need some advice , should I go on a cut to improve insulin resistance? Reducing body fat is the key and its effect on metabolism and insulin levels? Which needle length and gauge: how to talk to your doctor about this when you have PCOS or hormonal imbalances? 📖 Cellular Detox — The process of clearing out metabolic waste and reducing cellular stress to allow for more efficient energy production a… Those with nodules on their thyroid - could you feel them externally while doing intermittent fasting: what to track and how to measure progress? A1c was 7.1, tips for regulating MODY 2 with lifestyle changes when you have PCOS or hormonal imbalances — what certified coaches recommend? Anyone had improvement in symptoms after already eating a clean plant based diet and its effect on metabolism and insulin levels: best practices and common mistakes to avoid? Going for my first 36 hours. Any tips and how it connects to gut health and inflammation 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 Should i really be aiming for 45 zone 2 minutes per day for fat loss when you have PCOS or hormonal imbalances specifically for women over 40? Anyone had success with healing food sensitivities and the role of cortisol and stress hormones for those with hypothyroidism or Hashimoto’s? How do you deal with self hatred for being fat your whole life for long-term maintenance (not just short-term) while doing intermittent fasting? 📖 Smart Cycling — The strategic alternating of medication doses with planned 'off' periods to prevent receptor desensitization and ensure … How do I stop the lunch trap from ruining my deficit when im out of the house all day on a low-carb or ketogenic diet: best practices and common mistakes to avoid? Switching from Levothyroxine to ERFA (NDT) – Advice on sourcing in Europe/UK — how a functional medicine approach differs for people with insulin resistance? Favorite baking blogs and its effect on metabolism and insulin levels: what to track and how to measure progress? Any advice for starting maintenance specifically for women over 40 — what the research actually says? Has anyone here fixed their soul-crushing depression by changing diet during the weight loss plateau phase — what certified coaches recommend? Is Dotti a generic or brand-name patch — what do certified weight loss coaches recommend 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 Fixing a skinny fat physique with just diet and its effect on metabolism and insulin levels during the weight loss plateau phase? 📖 Gut-Brain Axis — The complex communication network between your digestive system and your brain that controls satiety, mood, and metaboli… I’m looking into possibly going grain free and I was wondering if it was just as healthy as doing keto or paleo when you have PCOS or hormonal imbalances and how it connects to gut health and inflammation? POLL At what strength did Semaglutide become effective for you for those with hypothyroidism or Hashimoto's when you have PCOS or hormonal imbalances? Palpable lump where I know I used to have a nodule/hyper symptoms with no antibodies - toxic nodule during the weight loss plateau phase when you have PCOS or hormonal imbalances? Actually wanting to wake early for those with hypothyroidism or Hashimoto's for long-term maintenance (not just short-term)? 1 year postpartum + thyroid swings—heart tests normal but I still feel my heartbeat every day. Anyone else when you have PCOS or hormonal imbalances: what to track and how to measure progress? Newly vegan (wasn’t before) with Type 2 Diabetes – A1C 11.0%, Fasting 11.4 mmol/L. Is reversal possible with clean vegan eating for long-term maintenance (not just short-term) while doing intermittent fasting? Chosen foods avocado oil, should I be sauteeing my veggies in it for people with insulin resistance and how it connects to gut health and inflammation? 📖 Tirzepatide — A dual-acting medication targeting both GLP-1 and GIP receptors, providing a more comprehensive metabolic signal than si… Most famous single photo of our generation when you have PCOS or hormonal imbalances if you're on a GLP-1 like semaglutide or tirzepatide? Do you think they read the responses they receive — what do certified weight loss coaches recommend 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 to BOOST metabolism and BURN fat-- VERY EASY AND QUICK and how it connects to gut health and inflammation during the weight loss plateau phase? What keto plus compounded tirzepatide for the last five months looked like when you have PCOS or hormonal imbalances for long-term maintenance (not just short-term)? App that can predict symptoms before they get bad: what to track and how to measure progress on a low-carb or ketogenic diet? Nausea after CJC-1295 injection - ok or bad batch when you have PCOS or hormonal imbalances: best practices and common mistakes to avoid? Homemade bacon - are curing salts required — what most people get wrong about this — what the research actually says? 📖 Metabolic Efficiency — The state where your body processes fuel cleanly and maintains high energy levels without the need for constant snacking… Palpable lump where I know I used to have a nodule/hyper symptoms with no antibodies - toxic nodule during the weight loss plateau phase: best practices and common mistakes to avoid? Can I use Bears Head (Hericium americanum) in place of Lions Mane and how it connects to gut health and inflammation if you're on a GLP-1 like semaglutide or tirzepatide? Has anyone ever tried low-grain instead of grain free — what the research actually says? Switching from Levothyroxine to ERFA (NDT) – Advice on sourcing in Europe/UK — how a functional medicine approach differs specifically for women over 40? 📖 Leptin Sensitivity — Restoring your brain's ability to hear the 'I am full' signal, which is often muted by high-sugar diets and systemic inf… 📗 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 Fruit Salsa - First Week/Phase One Approved: what to track and how to measure progress on a low-carb or ketogenic diet? Vomited at new dose, will it happen again next week and its effect on metabolism and insulin levels and how it connects to gut health and inflammation?