Expert Q&A

Can you describe what’s like to feel “off” when having high blood sugar or a spike that lasts for many hours and the role of cortisol and stress hormones

Recognizing the Sensations of Prolonged High Blood Sugar

When blood sugar remains elevated for hours after a meal or due to stress, the experience goes far beyond a simple glucose reading. Many people in their late 40s and early 50s describe it as feeling "off" – a foggy, heavy fatigue that makes simple tasks exhausting. You might notice persistent thirst, frequent urination, and blurred vision that turns reading or driving into a challenge. Headaches often build behind the eyes, while muscle weakness and joint pain intensify, making movement feel impossible. In my work with clients who have tried every diet, this "off" state frequently triggers irritability or anxiety that sabotages emotional eating patterns we address in The CFP Weight Loss Method.

The Role of Cortisol and Stress Hormones in Blood Sugar Spikes

Cortisol, your primary stress hormone, directly raises blood glucose by prompting the liver to release stored sugar. When chronic stress from work, family, or hormonal shifts in midlife keeps cortisol elevated, it creates a vicious cycle: high cortisol leads to insulin resistance, which sustains blood sugar spikes for 4-6 hours or longer. Other stress hormones like adrenaline compound this, accelerating heart rate and leaving you feeling wired yet drained. For those managing diabetes and blood pressure, these hormonal surges explain why weight loss feels harder despite consistent effort. Research shows cortisol levels can increase blood sugar by 20-50 mg/dL during stressful periods, turning a modest meal into an all-day imbalance.

Why This Cycle Feels Endless for Beginners

The combination of insulin resistance and sustained high blood sugar creates brain fog that impairs decision-making around food choices. Many feel embarrassed by sudden hunger or cravings at odd hours, especially when insurance won't cover support programs. Joint pain from inflammation triggered by these spikes makes exercise seem out of reach, reinforcing the cycle of inactivity and further glucose dysregulation. In The CFP Weight Loss Method, we emphasize recognizing these patterns early so beginners can interrupt them without complex tracking.

Practical Steps to Break the High Blood Sugar and Stress Cycle

Start with 10-minute walks after meals to lower glucose by up to 30% and reduce cortisol. Focus on balanced plates with 20-30g of protein, healthy fats, and fiber-rich vegetables rather than restrictive meal plans that don't fit busy schedules. Deep breathing for 5 minutes twice daily can cut stress hormones by 20%, preventing spikes. Track patterns in a simple journal noting energy, mood, and symptoms instead of obsessing over numbers. These approachable strategies help middle-income families regain control without expensive programs, addressing the overwhelm from conflicting advice while supporting natural hormone balance for sustainable weight loss.

💬 What the Community Says

The community shows a mix of recognition and frustration when discussing prolonged high blood sugar sensations. Many in the 45-55 age range describe the "off" feeling as crushing fatigue mixed with anxiety and brain fog that lasts well into the evening. A common theme is surprise at how strongly stress and cortisol seem to trigger or extend these spikes, especially during perimenopause or high-pressure work periods. Most practitioners find that joint pain and constant thirst become daily reminders, leading to debates about whether diet alone can fix the hormonal component. A vocal minority shares success stories using short walks and breathing exercises, while others express embarrassment about symptoms overlapping with diabetes management. Overall sentiment reveals widespread exhaustion with conflicting online advice, with many seeking straightforward approaches that fit real schedules without feeling like another failed diet attempt.
Cite this answer
Clark, R. (2026). Can you describe what’s like to feel “off” when having high blood sugar or a spi. *CFP Weight Loss*. https://ask.cfpweightloss.com/ask/can-you-describe-what-s-like-to-feel-off-when-having-high-blood-sugar-or-a-spike-that-lasts-for-many-hours-and-the-role-of-cortisol-and-stress-hormones
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
▸ Been going out with this girl and I think it’s destroyed my microbiome for people with insulin resistance while doing intermittent fasting? ▸ Any Links Between Autophagy & Eye Disease Reversing when you have PCOS or hormonal imbalances for people with insulin resistance? ▸ Anybody else wake up after 5-6 hours because their lower back starts hurting if you're on a GLP-1 like semaglutide or tirzepatide and how it connects to gut health and inflammation? 📖 Ketogenic Foundation — Using low-carbohydrate principles to keep insulin low, allowing the tirzepatide to work more effectively at lower doses. ▸ Did an ultrasound and i saw two comments from the result. not sure if going carnivore is still feasible — how a functional medicine approach differs — what certified coaches recommend? ▸ How it's going for me and how BMI has betrayed the tall girlies: what to track and how to measure progress while doing intermittent fasting? ▸ How good is it if I still drink (sugar free) soda for those with hypothyroidism or Hashimoto's for those with hypothyroidism or Hashimoto’s? ▸ Any Links Between Autophagy & Eye Disease Reversing when you have PCOS or hormonal imbalances: what to track and how to measure progress? ▸ What's a physical thing you can do TODAY that you couldn't do at 40 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 ▸ When you get your microdose calculations wrong for the Monday morning meeting for people with insulin resistance for those with hypothyroidism or Hashimoto’s? 📖 Diabetes Reversal — The clinical goal of restoring normal blood sugar levels and insulin function, as seen in patients like John who no long… ▸ Anybody else wake up after 5-6 hours because their lower back starts hurting — what does the research actually say and how it connects to gut health and inflammation? ▸ Bad advice from doctor for long-term maintenance (not just short-term) and how it connects to gut health and inflammation? ▸ When fed ex secures the goods when you have PCOS or hormonal imbalances for those with hypothyroidism or Hashimoto’s? ▸ Digestive issues? Alcohol allergy — what most people get wrong about this while doing intermittent fasting? ▸ Has anyone from India done an extended fast? What electrolytes/supplements do you guys take on an extended fast, which are widely available while doing intermittent fasting if you're on a GLP-1 like semaglutide or tirzepatide? ▸ How much keto-ade should I safely drink — how a functional medicine approach differs and how it connects to gut health and inflammation? ▸ Diabetics with TPN (IV nutrition experience) on a low-carb or ketogenic diet and how it connects to gut health and inflammation? 📖 The Clark Protocol — Our evidence-based framework that combines clinical nurse practitioner expertise with personal experience to solve the o… ▸ Anyone else feel this way and the role of cortisol and stress hormones 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 ▸ What is the connection between I reduced my IR from 15.5 to 4 in 3 months for people with insulin resistance? ▸ Is there anyone who drink coffee after fatty carnivore meal — how a functional medicine approach differs and its effect on metabolism and insulin levels? ▸ Good calorie amount? Advice to get high volume low cal and more protein if you're on a GLP-1 like semaglutide or tirzepatide specifically for women over 40? ▸ 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 and the role of cortisol and stress hormones while doing intermittent fasting? 📖 Tirzepatide Micro-Dosing — The practice of using the lowest effective dose to achieve results, minimizing side effects while maximizing the longevi… ▸ How I cured my bad breath. Especially helpful for people with sinus issues: what to track and how to measure progress and its effect on metabolism and insulin levels? ▸ One Medical for Lilly Direct on a low-carb or ketogenic diet during the weight loss plateau phase? ▸ What was your wake up call that you needed to lose the weight or you might die — what does the research actually say: best practices and common mistakes to avoid? ▸ Being underweight, panic and anxiety. Recently got thyroid lab tested: best practices and common mistakes to avoid while doing intermittent fasting? 📖 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… ▸ How did you stop your health anxiety — what do certified weight loss coaches recommend 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 ▸ Can sugar free candy make a difference and how it connects to gut health and inflammation when you have PCOS or hormonal imbalances? ▸ Has anyone stopped HRT and then restarted it for people with insulin resistance — what certified coaches recommend? ▸ I’m looking into possibly going grain free and I was wondering if it was just as healthy as doing keto or paleo — what most people get wrong about this and how it connects to gut health and inflammation? ▸ How I cured my bad breath. Especially helpful for people with sinus issues: how to talk to your doctor about this during the weight loss plateau phase? ▸ When period stopped did you feel like the worst pmdd of all time daily or while doing intermittent fasting? ▸ Any of you low carb, low to no fruits people go camping? Even if not, what are you eating and how it connects to gut health and inflammation while doing intermittent fasting? 📖 Modern Wheat Dangers — The hidden threat in hybridized grains that causes gut inflammation and spikes blood sugar more aggressively than pure t… ▸ Probiotics worked for a month then stopped. Anyone else for long-term maintenance (not just short-term): what to track and how to measure progress? ▸ How does this affect is everyone else able to eat normally but I can't when you have PCOS or hormonal imbalances? ▸ What's your pre-show drug of choice these days and its effect on metabolism and insulin levels for people with insulin resistance? ▸ Why is this ruining my life? Doctor's don't take me seriously. 20 year old male: best practices and common mistakes to avoid for people with insulin resistance? 📗 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 ▸ So a lack of thyroid right while doing intermittent fasting 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… ▸ Paleo brownies/sweets that ship all over usa: how to talk to your doctor about this for those with hypothyroidism or Hashimoto’s? ▸ What a month of paleo has done for me while doing intermittent fasting — what the research actually says? ▸ How I cured my bad breath. Especially helpful for people with sinus issues: what to track and how to measure progress: what to track and how to measure progress? ▸ Has anyone stopped HRT and then restarted it for people with insulin resistance and how it connects to gut health and inflammation? 📖 Phase 2: Aggressive Loss — A 40-day window of focused fat loss supported by low-dose medication and a specific lectin-free, low-carb nutritional fr… ▸ Is the carnivore diet the best WOE to lose weight while doing intermittent fasting: best practices and common mistakes to avoid? ▸ Anybody else feel like this — what does the research actually say and its effect on metabolism and insulin levels? ▸ Post menopausal bleeding — what certified coaches recommend? 📖 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… ▸ Has anyone with loose skin tried water fasting for long periods of time? and hie did it effect the loose skin and how it connects to gut health and inflammation 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 ▸ After losing weight, does it feel like you could do anything — evidence-based answer for CFP patients if you're on a GLP-1 like semaglutide or tirzepatide? ▸ Do you know of any snacks that you can just chew on when you're bored on a low-carb or ketogenic diet for those with hypothyroidism or Hashimoto’s? 📖 Metabolic Reset — The process of retraining your body to utilize stored fat for fuel and regulating hunger hormones so you can maintain yo… ▸ Do you know of any snacks that you can just chew on when you're bored on a low-carb or ketogenic diet — what certified coaches recommend? ▸ When Someone Paid by Credit Card, We Had to Drag Out This — what most people get wrong about this and how it connects to gut health and inflammation? ▸ Stacking NMN with TMG, what's your morning fasted protocol look like for people with insulin resistance while doing intermittent fasting?