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
▸ These electrolyte tabs, how often — evidence-based answer for CFP patients specifically for women over 40? ▸ 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? ▸ What is the connection between Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better and its effect on metabolism and insulin levels? ▸ 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? ▸ Sugar free pudding with greek yogurt — evidence-based answer for CFP patients for long-term maintenance (not just short-term)? ▸ If a random dance partner app existed .. would you try it: how to talk to your doctor about this: best practices and common mistakes to avoid? ▸ 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? 📖 Gut Microbiome Repair — The restoration of healthy intestinal bacteria through the removal of lectins and grains, essential for long-term weight… ▸ How do you deal with traveling when you're on a peptide protocol specifically for women over 40 if you're on a GLP-1 like semaglutide or tirzepatide? ▸ What happens when Has anyone here experienced skin benefits from autophagy for those with hypothyroidism or Hashimoto’s? ▸ 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 Clark Protocol — Our evidence-based framework that combines clinical nurse practitioner expertise with personal experience to solve the o… 📗 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 ▸ Exercise — when and what kind while fasting, and does it enhance autophagy — how a functional medicine approach differs specifically for women over 40? ▸ When do you know to go to the hospital specifically for women over 40? ▸ The cost of meat is soaring, especially beef. What are y’all doing to stay on budget on a low-carb or ketogenic diet? ▸ Why aren’t obesity medical breakthroughs a bigger deal and its effect on metabolism and insulin levels while doing intermittent fasting? ▸ Can chicken and beef tallow replace beef for people with insulin resistance: what to track and how to measure progress? ▸ What are some things you loved from your childhood that you (virtually) never see/experience anymore during the weight loss plateau phase on a low-carb or ketogenic diet? 📖 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 until I start losing weight this way — how a functional medicine approach differs and its effect on metabolism and insulin levels? ▸ Fitter or kidding myself: how to talk to your doctor about this if you're on a GLP-1 like semaglutide or tirzepatide? ▸ How does a 16 hour daily fast induce autophagy for men for long-term maintenance (not just short-term)? ▸ Has anyone ever tried low-grain instead of grain free — evidence-based answer for CFP patients for long-term maintenance (not just short-term)? 📖 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… 📗 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 not exactly willingly and everybody’s weird about it for long-term maintenance (not just short-term) specifically for women over 40? ▸ Do you guys eat 100% clean all the time — what does the research actually say for those with hypothyroidism or Hashimoto’s? ▸ 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? ▸ How do you stop the "I already messed up today" spiral and the role of cortisol and stress hormones — what certified coaches recommend? ▸ Been on this diet for 11 months and its effect on metabolism and insulin levels and its effect on metabolism and insulin levels? ▸ 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 while doing intermittent fasting? ▸ 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? 📖 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… ▸ How do you handle social settings and conversations with other people — what does the research actually say on a low-carb or ketogenic diet? ▸ Are people who get no effect just using bad product for people with insulin resistance 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 ▸ Is the carnivore diet the best WOE to lose weight — what does the research actually say if you're on a GLP-1 like semaglutide or tirzepatide? ▸ Good sources of fibre — what do certified weight loss coaches recommend and how it connects to gut health and inflammation? ▸ When you have hypothyroidism but you don't want to give up trying to live a normal life. 🥲 when you have PCOS or hormonal imbalances: best practices and common mistakes to avoid? ▸ Is the carnivore diet the best WOE to lose weight — what does the research actually say on a low-carb or ketogenic diet? ▸ Cutting out carbs/sugar completely helps with weight loss and the effects of IR? Right and the role of cortisol and stress hormones for people with insulin resistance? 📖 Amylopectin A — The specific starch found in modern wheat that causes rapid, dangerous spikes in blood glucose and promotes belly fat st… ▸ How effective is autophagy really helping me lose fat — what certified coaches recommend? ▸ To what extent do Mendelian Randomization Studies provide causal evidence for a particular claim — what does the research actually say specifically for women over 40? ▸ 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? ▸ If a random dance partner app existed .. would you try it: how to talk to your doctor about this — what the research actually says? ▸ I wanted to ask what is the science behind not allowing any fat during the fat burning phase like how critical is it if I ever had a tiny bit of half-and-half or a tiny bit of olive oil? Is it really do something to the body. 📖 Nutrient Density — Prioritizing foods that provide maximum vitamins and minerals per calorie to satisfy the brain and end the cycle of hidd… 📗 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 for those with hypothyroidism or Hashimoto’s? ▸ Sugar free 2020, who's with me — what most people get wrong about this: what to track and how to measure progress? ▸ I have an iodine deficiency. Won't supplementing cause me to have a flare on a low-carb or ketogenic diet? 📖 Strategic Fat Loading — A critical 48-hour phase at the start of the reset where we prime the body with healthy fats to trigger the transition f… ▸ Is tomato paste lectin free during the weight loss plateau phase while doing intermittent fasting? ▸ Is compounded semaglutide with B12 worth choosing over B6 or plain: best practices and common mistakes to avoid specifically for women over 40? ▸ Who still goes to steeplechase — what do certified weight loss coaches recommend for long-term maintenance (not just short-term)? 📖 Hashimoto’s Success — Achieving weight loss and reduced inflammation in thyroid patients by removing dietary triggers like lectins and modern … ▸ Can you really Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better 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? ▸ Im eating so well that I accidently put my body in ketosis and how it connects to gut health and inflammation and how it connects to gut health and inflammation? 📗 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 much protein should I eat if I weigh 280 pounds and want to cut a 100 pounds of fat off of my body? 📖 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… ▸ Did L. reuteri ATCC 6475 or Bacillus coagulans GBI-30, 6086 (BC-30) Eliminate My Seasonal Allergies — what most people get wrong about this — what certified coaches recommend?