Expert Q&A

How does i Fast for autophagy for loose skin without losing anymore weight with hypothyroidism?

Understanding Autophagy and Its Role in Skin Health During Weight Stability

I've helped thousands navigate autophagy—the body's cellular cleanup process that peaks after 16-18 hours of fasting. For those with hypothyroidism, autophagy can reduce inflammation that contributes to loose skin, but the key is avoiding further calorie deficits that trigger metabolic slowdown. My methodology in The CFP Reset emphasizes cycling fasting windows to stimulate collagen remodeling without dropping the scale.

Research shows autophagy ramps up significantly between 16-24 hours, breaking down damaged proteins in skin cells. This helps tighten tissue, especially when combined with resistance movement. With hypothyroidism, your slower metabolism means you must protect thyroid hormone conversion by keeping overall intake steady—aim for maintenance calories on non-fasting days.

Designing a Fasting Protocol That Preserves Muscle and Limits Loose Skin

Start with a gentle 16:8 intermittent fasting schedule, eating within an 8-hour window from 10am-6pm to align with natural cortisol rhythms often disrupted in midlife hormonal shifts. On fasting days, consume bone broth or black coffee with a pinch of sea salt to support electrolytes without breaking the fast. This promotes autophagy while preventing the joint pain flare-ups common when exercising on an empty stomach.

To avoid losing more weight, calculate your maintenance calories (typically 1800-2200 for a 45-55 year old woman with hypothyroidism) using an online TDEE calculator adjusted -10% for thyroid function, then match that intake on feeding days. Include 1.6g of protein per kg of body weight—think 30g per meal from sources like eggs, Greek yogurt, and fatty fish. This preserves lean mass, which is crucial because muscle loss accelerates sagging skin.

Targeted Strategies for Hypothyroidism, Joint Pain, and Skin Tightening

Hypothyroidism often pairs with insulin resistance and elevated cortisol, making weight loss plateaus frustrating. In my approach, we layer in short strength sessions—10-15 minutes of bodyweight squats or resistance bands—on feeding days only. These build the underlying muscle that supports skin, reducing embarrassment around loose areas without high-impact stress on painful joints.

Supplement wisely: 5g daily collagen peptides mixed in your first meal has been shown in studies to improve skin elasticity by 7-10% after 8 weeks. Add selenium (200mcg) and zinc (15-30mg) to optimize thyroid function during fasting. Track symptoms like cold intolerance or fatigue; if they worsen, shorten your fast to 14 hours.

Monitoring Progress and Adjusting for Long-Term Success

Measure success beyond the scale—use weekly waist-to-hip ratios, skin pinch tests, and energy levels. Many in their 50s see visible skin improvements within 6-8 weeks when autophagy is triggered consistently but weight stays stable. Avoid the trap of conflicting nutrition advice by sticking to whole foods: vegetables, healthy fats, and moderate complex carbs in your eating window.

Remember, with insurance limitations and busy schedules, this method requires minimal time—just consistent windows and simple meals. If diabetes or blood pressure are factors, consult your doctor before starting, as fasting can lower blood sugar rapidly. The goal is sustainable change that rebuilds confidence without another failed diet cycle.

💬 What the Community Says

The community shows cautious optimism around using intermittent fasting for autophagy while managing hypothyroidism and loose skin. Many in the 45-54 age group share stories of trying 16:8 windows but struggling to stop the scale from dropping further, often blaming slower thyroid function. A common debate centers on whether collagen supplements truly help skin elasticity or if it's mostly the muscle-preserving protein intake. Practitioners frequently mention joint pain making extended fasts difficult, leading some to prefer 14:10 instead. There's widespread frustration with conflicting online advice—some swear by bone broth during fasts, others warn it breaks autophagy. Lived experiences highlight hormonal changes in perimenopause amplifying loose skin fears, with most agreeing maintenance calories and strength work are essential. A vocal minority reports success stabilizing weight after 4-6 weeks, though beginners often feel overwhelmed tracking everything without professional guidance.
Cite this answer
Clark, R. (2026). How does i Fast for autophagy for loose skin without losing anymore weight with . *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/how-does-i-fast-for-autophagy-for-loose-skin-without-losing-anymore-weight-with-hypothyroidism
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
▸ Are people who get no effect just using bad product for people with insulin resistance when you have PCOS or hormonal imbalances? ▸ Were any of you guys fans of Journey? How big were they — what the research actually says? ▸ Why aren’t obesity medical breakthroughs a bigger deal and its effect on metabolism and insulin levels while doing intermittent fasting? 📖 Maintenance Phase — The final 28 days of our 70-day cycle where we stabilize the new weight and solidify the metabolic habits that prevent f… ▸ Will eating meintenance calories make me lose weight for those with hypothyroidism or Hashimoto's when you have PCOS or hormonal imbalances? ▸ 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 for people with insulin resistance? ▸ 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? ▸ Can you take vitamin D with a tbsp of oil on an extended water fast for people with insulin resistance during the weight loss plateau phase? ▸ 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? ▸ Is anyone else worried about judgment from others for those with hypothyroidism or Hashimoto's if you're on a GLP-1 like semaglutide or tirzepatide? ▸ How much keto-ade should I safely drink: best practices and common mistakes to avoid and how it connects to gut health and inflammation? 📖 Muscle Sarcopenia — The dangerous loss of lean muscle mass often seen in traditional 'crash diets' or high-dose GLP-1 use, which we combat t… 📗 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’s your favorite toothpaste for people with insulin resistance — what the research actually says? ▸ 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 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? ▸ 42yom Im finding it much harder to lose weight, what are some things I can do now to start losing weight? 📖 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… ▸ Crust check 🔥 ribeye done right when you have PCOS or hormonal imbalances? ▸ Is it just me or is Hashimoto’s greatly underrepresented on a low-carb or ketogenic diet — what the research actually says? ▸ Is it normal to lose 6 kg in one week during the weight loss plateau phase for long-term maintenance (not just short-term)? ▸ Lost weight not exactly willingly and everybody’s weird about it for long-term maintenance (not just short-term) — what the research actually says? 📖 Nutrient Density — Prioritizing foods that provide maximum vitamins and minerals per calorie to satisfy the brain and end the cycle of hidd… ▸ How to handle calories vs carbs/fat/sugar and how it connects to gut health and inflammation 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 ▸ 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? ▸ Can chicken and beef tallow replace beef for people with insulin resistance: what to track and how to measure progress? 📖 Hormonal Chaos — The internal state of imbalance caused by modern grains and refined carbs that overrides willpower and forces the body t… ▸ 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? ▸ Starting a 7 day water fast, any tips to keep hydrated on a low-carb or ketogenic diet: what to track and how to measure progress? ▸ Got diagnosed today, where do i go from here — what do certified weight loss coaches recommend — what certified coaches recommend? ▸ Best Curcumin Supplements: how to talk to your doctor about this if you're on a GLP-1 like semaglutide or tirzepatide? ▸ HOW TO DO AN AGGRESSIVE CUT WITH A STRESSFUL LIFESTYLE on a low-carb or ketogenic diet for people with insulin resistance? ▸ Fitter or kidding myself: how to talk to your doctor about this if you're on a GLP-1 like semaglutide or tirzepatide? 📖 Diabetes Reversal — The clinical goal of restoring normal blood sugar levels and insulin function, as seen in patients like John who no long… ▸ How to calm my nerves down at doctors — 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 ▸ Probiotics worked for a month then stopped. Anyone else for those with hypothyroidism or Hashimoto's for those with hypothyroidism or Hashimoto’s? ▸ Tips for maintenance: what’s yours for long-term maintenance (not just short-term): best practices and common mistakes to avoid? ▸ 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? ▸ Low TSH, Low T4, and Low T3 simultaneously on Levothyroxine — anyone experienced this and the role of cortisol and stress hormones on a low-carb or ketogenic diet? ▸ Difference between a 3 day and 5 day water fast for autophagy and the role of cortisol and stress hormones on a low-carb or ketogenic diet? 📖 Smart Cycling — The strategic alternating of medication doses with planned 'off' periods to prevent receptor desensitization and ensure … ▸ Omnipod. Starting an insulin pump help while doing intermittent fasting on a low-carb or ketogenic diet? ▸ 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) — what the research actually says? ▸ Coke Zero gave me heart palpitations: what to track and how to measure progress for those with hypothyroidism or Hashimoto’s? ▸ How long does it take to Is Autophagy? 8 Amazing Benefits Of Fasting That Will Save Your Life: 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 ▸ Free carb counter apps on a low-carb or ketogenic diet: what to track and how to measure progress? ▸ What foods to stock for overnight guest — evidence-based answer for CFP patients: what to track and how to measure progress? ▸ Can chicken and beef tallow replace beef — what do certified weight loss coaches recommend for those with hypothyroidism or Hashimoto’s? 📖 Gut-Brain Axis — The complex communication network between your digestive system and your brain that controls satiety, mood, and metaboli… ▸ Has anyone ever tried low-grain instead of grain free — evidence-based answer for CFP patients for long-term maintenance (not just short-term)? ▸ 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? ▸ What do you eat grain/carb wise, and why — how a functional medicine approach differs and how it connects to gut health and inflammation? ▸ Should I be worried yet, been sitting for 5 days no movement while doing intermittent fasting: best practices and common mistakes to avoid? ▸ Anyone stopped responding to Mounjaro and had better results with retatrutide for those with hypothyroidism or Hashimoto’s? ▸ 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? 📖 Metabolic Flexibility — The body’s ability to efficiently switch between burning carbohydrates and burning stored body fat based on availability… ▸ 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? 📗 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 ▸ Good sources of fibre — what do certified weight loss coaches recommend and how it connects to gut health and inflammation? ▸ 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? ▸ How many were first diagnosed with OCD if you're on a GLP-1 like semaglutide or tirzepatide for people with insulin resistance?