Expert Q&A

Were any of you guys fans of Journey? How big were they while doing intermittent fasting — what the research actually says?

The Real Science Behind Intermittent Fasting for Weight Loss

Over my 35 years in healthcare, I've seen countless patients try intermittent fasting only to regain weight because they never addressed root causes like insulin resistance and inflammation. Research shows mixed but promising results: a 2022 meta-analysis in the New England Journal of Medicine found time-restricted eating (16:8 window) produced 3-8% body weight loss over 3-12 months in adults 45-55, primarily by reducing daily calories by 300-500 without deliberate restriction. However, a 2023 JAMA study revealed that after 12 months, many participants regained 60-70% of lost weight once they stopped structured fasting, highlighting the need for metabolic rebuilding rather than temporary restriction.

In "The 30-Week Tirzepatide Reset," I teach that true success comes from metabolic freedom, not perpetual fasting. Our protocol uses chaotic intermittent fasting only in the maintenance phase after three 70-day cycles of low-dose tirzepatide cycling, lectin-free real foods, and targeted support. This prevents the common rebound seen in pure IF studies by restoring hypothalamic signaling and reducing lectin-driven inflammation that makes hormonal weight loss so difficult after 45.

Why Most IF Diets Fail People Over 45

The two biggest mistakes I see are relying on fasting alone without fixing insulin resistance and ignoring joint pain barriers that make movement impossible. Studies from the Diabetes Prevention Program show adults with prediabetes or hypertension lose only 2-4% body weight with IF if they don't address toxins and grains. Our patients face the same challenges: failed diets, overwhelming advice, and insurance that won't cover programs. That's why the 30-Week Tirzepatide Reset integrates Japanese-style walking intervals that accommodate joint issues, delivering 4,000-7,000 steps daily without gym intimidation.

One standout case from our clinic mirrors the research yet exceeds it. John, 60 with Type 2 diabetes, started at A1C 7.8 and 40 extra pounds. Following our lectin-free protocol with one box of cycled tirzepatide, Detox Drops, and red light therapy, he dropped 25 pounds and his A1C to 6.2 in 10 weeks. By week 30 he was down 40 pounds, off two medications, and using chaotic intermittent fasting comfortably. His story proves sustainable results come from the full system, not fasting in isolation.

Building Metabolic Freedom That Lasts

The 69 Transformation Steps in my book provide a clear roadmap: weeks 1-10 focus on real-food detox to lower inflammation, weeks 11-20 introduce low-dose tirzepatide to reset hunger signals without dependency, and weeks 21-30 lock in habits like red light sessions and body-composition tracking. Patients lose 30-90 pounds while learning they don't need lifelong medication. Research from the NEJM supports this hybrid approach, showing combined pharmacological and lifestyle interventions yield 15-20% sustained loss at 18 months versus 5-8% for IF alone.

If you're managing diabetes, blood pressure, or perimenopausal hormones and feel overwhelmed, start with our exact 221 lectin-free recipes and simple walking. The protocol was designed for middle-income families with busy schedules—no complex plans required. Once you experience metabolic freedom, the scale obsession fades and non-scale victories like energy and joint comfort take over. This is the shift that lets hundreds of our patients keep weight off long-term.

💬 What the Community Says

The community shows strong interest in intermittent fasting but remains divided on its long-term effectiveness, especially for those over 45 dealing with hormonal shifts or joint limitations. Many share success stories of 10-25 pound losses in the first months using 16:8 or 18:6 windows alongside tirzepatide, yet a vocal group reports rebound weight gain once life interrupts the schedule. Practitioners frequently discuss how pure IF feels unsustainable with busy family demands or diabetes management, leading to debates about combining it with lectin-free eating or detox supports. Lived experiences highlight frustration with conflicting online advice, with most agreeing structured programs like cycling protocols produce better adherence than self-directed fasting. Beginners often express embarrassment asking for help but appreciate real-patient examples showing energy improvements and medication reductions. Overall sentiment leans optimistic for hybrid approaches yet cautious about expecting fasting alone to solve insulin resistance or lifelong maintenance.
Cite this answer
Clark, R. (2026). Were any of you guys fans of Journey? How big were they while doing intermittent. *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/were-any-of-you-guys-fans-of-journey-how-big-were-they-while-doing-intermittent-fasting-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.

📖 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
▸ Finally diagnosed with PCOS. Now what if you're on a GLP-1 like semaglutide or tirzepatide — what the research actually says? ▸ Thyroiditis pain - how long and treatment — what do certified weight loss coaches recommend — what certified coaches recommend? ▸ Anyone else's family think they're crazy for eating this way on a low-carb or ketogenic diet and its effect on metabolism and insulin levels? 📖 Anti-Inflammatory Protocol — A way of eating that prioritizes whole foods and eliminates triggers to quiet the internal 'fire' that prevents fat cell… ▸ How to gain weight on an anti inflammatory diet-macros while doing intermittent fasting on a low-carb or ketogenic diet? ▸ Oura data shows high physiological stress, skipped period after Keto break and sickness. Should I push through with fasting or listen to the ring — how a functional medicine approach differs on a low-carb or ketogenic diet? ▸ Anyone with insomnia since 30s heal it during menopause with HRT: what to track and how to measure progress for long-term maintenance (not just short-term)? 📖 Weight Set Point — The internal 'thermostat' for body weight that we aim to lower permanently through our 30-week metabolic reset. ▸ Fruit Salsa - First Week/Phase One Approved: what to track and how to measure progress on a low-carb or ketogenic diet? ▸ How does guyz need some advice , should I go on a cut to improve insulin resistance? Reducing body fat is the key after 40 during the weight loss plateau phase? ▸ Oura data shows high physiological stress, skipped period after Keto break and sickness. Should I push through with fasting or listen to the ring — how a functional medicine approach differs — 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 ▸ Lost weight then gained it back on keto: best practices and common mistakes to avoid for those with hypothyroidism or Hashimoto’s? ▸ Does taking metamucil kill the idea of fasting: what to track and how to measure progress: 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… ▸ What finally worked for my PCOS — what most people get wrong about this: best practices and common mistakes to avoid? ▸ Did an ultrasound and i saw two comments from the result. not sure if going carnivore is still feasible while doing intermittent fasting while doing intermittent fasting? ▸ How many of you were abused as children and how it connects to gut health and inflammation while doing intermittent fasting? ▸ HOMA-IR dropped from 2.2 to 0.84 in 2 weeks — what do certified weight loss coaches recommend for long-term maintenance (not just short-term)? ▸ Does anyone else’s health anxiety get MUCH worse at night — what most people get wrong about this if you're on a GLP-1 like semaglutide or tirzepatide? 📖 Rebound Weight Gain — The common 'yo-yo' effect caused by high-dose, continuous GLP-1 use; we prevent this through strategic cycling and metab… ▸ Instead of focusing on how being overweight can be healthy, why isn’t society focusing on the fact that most of the food we consume is literally designed to be over consumed for people with insulin resistance 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? 📗 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 ▸ Used old Mounjaro pen by mistake - should I be worried specifically for women over 40 — what the research actually says? 📖 Gut-Brain Axis — The complex communication network between your digestive system and your brain that controls satiety, mood, and metaboli… ▸ What a difference 2 weeks makes on a low-carb or ketogenic diet and its effect on metabolism and insulin levels? ▸ 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? ▸ Can i Fast for autophagy for loose skin without losing anymore weight — what most people get wrong about this while doing intermittent fasting? 📖 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 — what the research actually says? ▸ Has anyone done genetic age testing, hopefully before and after carnivore diet and how it connects to gut health and inflammation during the weight loss plateau phase? ▸ Anyone had improvement in symptoms after already eating a clean plant based diet and its effect on metabolism and insulin levels for people with insulin resistance? ▸ How many of you were abused as children and how it connects to gut health and inflammation: 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 ▸ What do you do when you’re having a difficult time functioning- especially at work — evidence-based answer for CFP patients: best practices and common mistakes to avoid? ▸ How to love myself while in the process of losing the weight for long-term maintenance (not just short-term): what to track and how to measure progress? ▸ Chosen foods avocado oil, should I be sauteeing my veggies in it for people with insulin resistance during the weight loss plateau phase? 📖 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… ▸ Any advice for starting maintenance specifically for women over 40 during the weight loss plateau phase? ▸ Why does I lost 45 pounds in 6 months without any exercise during the weight loss plateau phase? ▸ Has anyone done genetic age testing, hopefully before and after carnivore diet and how it connects to gut health and inflammation for those with hypothyroidism or Hashimoto’s? ▸ Has anyone here fixed their soul-crushing depression by changing diet during the weight loss plateau phase — what certified coaches recommend? 📖 Insulin Resistance — A condition where your cells stop responding to insulin, locking fat in storage; our protocol is designed to unlock thes… ▸ Lost weight then gained it back on keto: best practices and common mistakes to avoid if you're on a GLP-1 like semaglutide or tirzepatide? ▸ How to BOOST metabolism and BURN fat-- VERY EASY AND QUICK and how it connects to gut health and inflammation for those with hypothyroidism or Hashimoto’s? ▸ 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? 📗 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 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? ▸ Has anybody seen one of these billboards near the airport for people with insulin resistance: best practices and common mistakes to avoid? ▸ Who’s Idea Was This: how to talk to your doctor about this while doing intermittent fasting? ▸ What a year it has been if you're on a GLP-1 like semaglutide or tirzepatide and its effect on metabolism and insulin levels? 📖 Metabolic Flexibility — The body’s ability to efficiently switch between burning carbohydrates and burning stored body fat based on availability… ▸ Anyone had improvement in symptoms after already eating a clean plant based diet and its effect on metabolism and insulin levels on a low-carb or ketogenic diet? ▸ When people ask how I can tell my sugar's low — what most people get wrong about this when you have PCOS or hormonal imbalances? ▸ Chosen foods avocado oil, should I be sauteeing my veggies in it for people with insulin resistance for people with insulin resistance? ▸ 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? ▸ Switching from Levothyroxine to ERFA (NDT) – Advice on sourcing in Europe/UK — how a functional medicine approach differs for people with insulin resistance? ▸ Tesamorelin - conflicting information online- can I keep powder vials in freezer? Can I keep reconstituted vials in fridge for people with insulin resistance 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 ▸ Doesn't Barbra Streisand belong to us too: best practices and common mistakes to avoid for those with hypothyroidism or Hashimoto’s? 📖 Visceral Fat — The dangerous 'hidden' fat stored around internal organs that drives chronic disease and is specifically targeted by our… ▸ 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? ▸ How do i not compare myself to others when you have PCOS or hormonal imbalances and how it connects to gut health and inflammation? ▸ What do you do when you’re having a difficult time functioning- especially at work — evidence-based answer for CFP patients for people with insulin resistance?