Why Eating Carbs Boosts Metabolism

Today, we’re tackling a misunderstood macronutrient:  carbohydrates.  I have talked about this numerous times on my podcast with Jay Feldman, Georgi Dinkov and Tyler Woodward. (to name a few)

🔥 The Metabolic Power of Carbs  

Carbs aren’t just fuel—they’re essential for efficient energy production. It also helps me power through my leg days! Here’s why:  

Glucose Oxidation:  Carbs are the body’s preferred energy source. When you eat enough, your cells efficiently convert glucose into ATP (cellular energy). Low-carb diets can force the body into less efficient pathways (like fat oxidation or gluconeogenesis), increasing stress hormones.  

Metabolic Rate Boost: Carbs help maintain thyroid hormone conversion (T4 → T3). Chronic low-carb intake can suppress T3, slowing metabolism.  

Cortisol Reduction: When carbs are too low, the body releases cortisol to mobilize energy from protein/fat. Over time, this can lead to burnout, fatigue, and stubborn weight retention.  

Poor workout recovery:  When eaten before exercise, carbs provide the necessary fuel for high-intensity workouts and help delay fatigue. They also aid in post-workout recovery by replenishing glycogen stores and promoting muscle repair. 

🚨Fatty Acid Oxidation vs. Glucose Oxidation

Carbs are central to glucose oxidation, a vital process where glucose is broken down in the mitochondria to produce energy. When glucose oxidation is efficient, your body functions like a well-oiled machine, and your metabolic rate stays high. 

Relying solely on fatty acids for fuel may sound appealing during a low-carb diet, but it can have unintended consequences. When your body prioritizes fat oxidation:

• Your metabolic rate slows down. 

• Energy-intensive processes, like maintaining body temperature or muscle repair, take a hit. 

• Critical functions, like hormone production, are suppressed. 

Conversely, consuming carbohydrates allows your body to maintain glucose oxidation as the primary fuel pathway, keeping energy production steady and metabolic rate elevated. 

What Happens When You Skip Carbs for a Long Period?

Without sufficient carbs, your body shifts into a form of “energy conservation mode.” This involves shutting down or impairing non-essential processes—leading to fatigue, poor recovery, and reduced performance. 

✅ How to Eat Carbs for Optimal Health 

Not all carbs are equal. Prioritize whole food carbs:  

✔ Glucose-rich foods (organic white rice, potatoes, fruit, raw honey)  

✔ Fiber-rich carbs (organic oats, squash, berries)  

✔ If you have gut issues start with easily digestible carbs (gradually introduce more complex, nutrient dense options as your gut health improves) 

🌈 Wellness Challenge of the Week

Walk once a day for 20 minutes😀 

• Pick a time that works the night before

• Set a timer as a reminder

• Put on your gym shoes and bring a friend or your dog!

• Walk 😃

💬 Quote of the Day 

"In every type of tissue, it is the failure to oxidize glucose that produces oxidative stress and cellular damage." – Dr. Ray Peat  

💌 Quick Tip of the Day: If you’re constantly tired, cold, or stressed, try adding 20–50g of clean carbs per meal. Monitor energy, sleep, and mood improvements.  Be sure to start slow when implementing carbs into your diet (especially if you have been low carb for a long time)

Stay well,  

Brian Gryn

https://briangryn.com/ 

P.S. Click to book a FREE 15 minute health breakthrough call with ME 😄 https://calendly.com/bdgryn/15min

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Disclaimer: This newsletter is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.