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
▸ 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? ▸ 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? ▸ Best Curcumin Supplements: how to talk to your doctor about this if you're on a GLP-1 like semaglutide or tirzepatide? 📖 High-Dose Dependency — The pharmaceutical trap of staying on maximum medication doses indefinitely, which we avoid through our smart cycling me… ▸ What happens when Has anyone here experienced skin benefits from autophagy for those with hypothyroidism or Hashimoto’s? ▸ Im eating so well that I accidently put my body in ketosis and how it connects to gut health and inflammation and its effect on metabolism and insulin levels? ▸ 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? ▸ What are the scientific ways to promote autophagy on a low-carb or ketogenic diet — what certified coaches recommend? ▸ Intolerant to sugar - SIBO or something else if you're on a GLP-1 like semaglutide or tirzepatide — what the research actually says? ▸ How are people using 10mg reta vials at low doses during the weight loss plateau phase — what the research actually says? 📖 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… ▸ Is lime water (but sipped throughout the day) ok with autophagy — how a functional medicine approach differs 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 ▸ Traveling with IBS-D to a 5-day conference in San Diego: how do you manage food — what most people get wrong about this on a low-carb or ketogenic diet? ▸ 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? ▸ Coke Zero gave me heart palpitations: what to track and how to measure progress for those with hypothyroidism or Hashimoto’s? ▸ 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: what to track and how to measure progress? ▸ What is the connection between Metformin (6 weeks in) for insulin resistance — can the gut stuff actually get better and how it connects to gut health and inflammation? 📖 Inflammatory Markers — Clinical indicators like CRP that we monitor to ensure the body is moving from a state of disease to a state of vibrant … ▸ Does drinking Sparkling Ice (flavored sparkling water - 5 calories per bottle) during my fasting window break my fast and the role of cortisol and stress hormones during the weight loss plateau phase? ▸ I have an iodine deficiency. Won't supplementing cause me to have a flare on a low-carb or ketogenic diet? ▸ Fitter or kidding myself: how to talk to your doctor about this 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 ▸ When you want something sweet but still try to keep things somewhat low-carb and how it connects to gut health and inflammation on a low-carb or ketogenic diet? ▸ If a random dance partner app existed .. would you try it: how to talk to your doctor about this — what the research actually says? 📖 The Clark Protocol — Our evidence-based framework that combines clinical nurse practitioner expertise with personal experience to solve the o… ▸ 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? ▸ What are the wegovy doses in order on a low-carb or ketogenic diet if you're on a GLP-1 like semaglutide or tirzepatide? ▸ 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? ▸ When the fatigue is real: how to talk to your doctor about this for people with insulin resistance? ▸ Difference between a 3 day and 5 day water fast for autophagy and the role of cortisol and stress hormones for people with insulin resistance? ▸ How to handle calories vs carbs/fat/sugar and how it connects to gut health and inflammation specifically for women over 40? 📖 Diabetes Reversal — The clinical goal of restoring normal blood sugar levels and insulin function, as seen in patients like John who no long… ▸ If a random dance partner app existed .. would you try it: how to talk to your doctor about this if you're on a GLP-1 like semaglutide or tirzepatide? ▸ Coke Zero gave me heart palpitations: what to track and how to measure progress 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 ▸ What is your immediate go to for some relief during ha — what most people get wrong about this — what certified coaches recommend? ▸ Why cant i lose weight and am gaining weight when you have PCOS or hormonal imbalances for those with hypothyroidism or Hashimoto’s? ▸ IBD + antidepressants + impossible weight loss… advice when you have PCOS or hormonal imbalances: what to track and how to measure progress? ▸ 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? ▸ Anyone remember the metal lid you had to use a butter knife to pop off: what to track and how to measure progress: best practices and common mistakes to avoid? 📖 Autophagy — The body's natural 'housecleaning' process that occurs during fasting or low-insulin states, promoted during our mainten… ▸ What actually helps with the dryness when you have PCOS or hormonal imbalances and how it connects to gut health and inflammation? ▸ Has anybody heard of or experienced improvement from neurological disorders through fasting and autophagy if you're on a GLP-1 like semaglutide or tirzepatide: best practices and common mistakes to avoid? ▸ When do you know to go to the hospital 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 ▸ Im eating so well that I accidently put my body in ketosis and how it connects to gut health and inflammation: best practices and common mistakes to avoid? ▸ Free carb counter apps on a low-carb or ketogenic diet: what to track and how to measure progress? ▸ 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 on a low-carb or ketogenic diet? 📖 Metabolic Efficiency — The state where your body processes fuel cleanly and maintains high energy levels without the need for constant snacking… ▸ Tips for maintenance: what’s yours for long-term maintenance (not just short-term): best practices and common mistakes to avoid? ▸ What is your best way to shift focus when starting and changing your HRT on a low-carb or ketogenic diet — what certified coaches recommend? ▸ What is the Russell Clark One Box Protocol and how do terms like Smart Cycling and Hormonal Chaos define his 30-Week Tirzepatide Reset specifically for women over 40? ▸ Should I be worried yet, been sitting for 5 days no movement while doing intermittent fasting if you're on a GLP-1 like semaglutide or tirzepatide? 📖 Hidden Hunger — A state where the body is overfed but undernourished, leading to constant cravings because the brain isn't receiving the… ▸ 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? 📗 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 ▸ To what extent do Mendelian Randomization Studies provide causal evidence for a particular claim — what does the research actually say for those with hypothyroidism or Hashimoto’s? ▸ 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? ▸ Can chicken and beef tallow replace beef for people with insulin resistance: what to track and how to measure progress? ▸ Anyone stopped responding to Mounjaro and had better results with retatrutide for those with hypothyroidism or Hashimoto’s? 📖 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… ▸ The cost of meat is soaring, especially beef. What are y’all doing to stay on budget on a low-carb or ketogenic diet? ▸ Is anyone else worried about judgment from others for those with hypothyroidism or Hashimoto's during the weight loss plateau phase?