Glycocalyx and the Role of Glycation

Methylglyoxal and the Glyoxylase System (GLO1)

In this episode of the College of Glycation, Professor Paul Reynolds uncovers methylglyoxal (MGO) as the real culprit behind most glycation damage — a highly reactive molecule your body produces every second as an unavoidable byproduct of glycolysis, and even more aggressively from fructose metabolism. Far more potent than glucose itself, MGO drives “dicarbonyl stress,” the upstream process that leads to advanced glycation end-products (AGEs) and contributes to aging and metabolic disease across the body. Your primary defense is the ancient glyoxalase system, led by the enzyme GLO1, which uses glutathione to neutralize MGO before it can harm proteins and DNA. GLO1 is controlled by Nrf2, the master regulator of cellular protection, meaning this defense system can be upregulated when needed.Reynolds explains how to strengthen your defenses in practical ways: activate Nrf2 with sulforaphane from broccoli sprouts (shown in a human clinical trial to improve blood sugar control in type 2 diabetes), support glutathione and NAD status through better sleep and lower inflammation, and use direct scavengers like carnosine to intercept MGO. He ties MGO and the glyoxalase system to every previous topic in the series — from blood vessels and kidneys to the brain, skin, and insulin resistance — revealing it as the unifying thread. The great news is that this system is responsive to how you eat and live, giving you real leverage to reduce production of MGO while boosting your body’s ability to clear it.Paul’s favorite yerba mate: https://unicity.link/121f260bfe Yerbe mate with a special formulated Balance fiber: https://ufeelgreat.com/c/PaulReynolds Full Metabolic System storefront: https://shop.unicity.com/paulreynolds Paul’s favorite source for clean, earth-sourced essentials such as salt, electrolytes, hydration, pre-workout and more. Go to https://redmond.life and use PAULSALT for 15% discount. Paul’s favorite exogenous ketones: A high-quality option is the NSF-certified goBHB from Clean Form Nutrition, where you can use the code Paul10 for a 10% discount: https://cleanformnutrition.com/products/go-bhb Paul’s favorite allulose source: https://rxsugar.com (discount: PAUL20) Paul’s favorite health check-up for men or women: https://blokes.co/DRPAUL (discount: DRPAUL for 50% off of labs and smart supplements and 15% off all other products)

Glycation and the Lungs

In this episode of the College of Glycation, Professor Paul Reynolds explores the lung as the ultimate proof-of-concept organ for the AGE-RAGE axis. Unlike most tissues where RAGE appears only during injury, the lung expresses the highest baseline levels of RAGE in the body from birth, where it normally plays a structural role helping alveolar type I cells maintain the delicate gas-exchange surface. When AGEs — whether inhaled from cigarette smoke, e-cigarette vapor, air pollution, or generated internally through high blood sugar — engage this abundant receptor, they trigger a powerful feed-forward inflammatory loop via NF-κB. This drives emphysema (RAGE knockout mice are largely protected from smoke-induced destruction), amplifies allergic asthma through HMGB1, and promotes pulmonary fibrosis by glycation-mediated collagen crosslinking that stiffens the lung matrix and pushes fibroblasts into scar-producing myofibroblasts. Lower circulating sRAGE also strongly tracks with worse COPD and emphysema in humans.The lung makes the chemistry visible in real time: inhaled exposures plug directly into the receptor that the rest of the body only activates under stress. Reynolds shows that the same metabolic strategies discussed throughout the series — steady blood glucose, reduced dietary AGEs, and supporting your body’s sRAGE “sponge” — protect lung health just as powerfully as avoiding direct inhalation of AGEs. The lesson is clear: an organ built almost entirely around reading sugar damage as fire deserves to be protected from it.Paul’s favorite yerba mate: https://unicity.link/121f260bfe Yerbe mate with a special formulated Balance fiber: https://ufeelgreat.com/c/PaulReynolds Full Metabolic System storefront: https://shop.unicity.com/paulreynolds Paul’s favorite source for clean, earth-sourced essentials such as salt, electrolytes, hydration, pre-workout and more. Go to https://redmond.life and use PAULSALT for 15% discount. Paul’s favorite exogenous ketones: A high-quality option is the NSF-certified goBHB from Clean Form Nutrition, where you can use the code Paul10 for a 10% discount: https://cleanformnutrition.com/products/go-bhb Paul’s favorite allulose source: https://rxsugar.com (discount: PAUL20) Paul’s favorite health check-up for men or women: https://blokes.co/DRPAUL (discount: DRPAUL for 50% off of labs and smart supplements and 15% off all other products)

Glycated LDL and Cardiovascular Health

In this episode of the College of Glycation, Professor Paul Reynolds challenges the decades-old story that heart disease risk is simply a matter of lowering your LDL cholesterol number. He explains how glycation — driven by glucose, fructose, and especially methylglyoxal — chemically modifies LDL particles, turning ordinary LDL into small, dense, sticky versions with defaced apoB that the liver can no longer clear efficiently. These modified particles are instead taken up by scavenger receptors on macrophages, creating foam cells that build atherosclerotic plaque. At the same time, high blood sugar and glycated LDL strip away the protective endothelial glycocalyx, the slippery non-stick coating that normally keeps LDL particles from sticking to artery walls, creating a self-reinforcing vicious cycle of damage and inflammation mediated by RAGE.Drawing on key studies showing that methylglyoxal alone can convert LDL into its most atherogenic form, that blocking RAGE dramatically reduces plaque even without lowering glucose or lipids, and that modified LDL in circulation predicts real cardiovascular events, Reynolds reframes heart disease as a metabolic and glycation problem rather than purely a cholesterol quantity problem. The practical takeaway is clear: instead of obsessing only over the LDL number, focus on tightening glucose control, reducing sugar and fructose load, and using the triglyceride-to-HDL ratio as a readily available proxy for the small, dense, glycation-prone LDL particles that actually drive disease. The most powerful protection for your heart comes from controlling the chemistry that turns normal LDL into a weapon. Paul’s favorite yerba mate: https://unicity.link/121f260bfe [https://unicity.link/121f260bfe]   Yerbe mate with a special formulated Balance fiber: https://ufeelgreat.com/c/PaulReynolds [https://ufeelgreat.com/c/PaulReynolds]   For the full Metabolic System storefront: https://shop.unicity.com/paulreynolds [https://shop.unicity.com/paulreynolds]   Paul’s favorite source for clean, earth-sourced essentials such as salt, electrolytes, hydration, pre-workout and more. Go to https://redmond.life [https://redmond.life/] and use PAULSALT for 15% discount.   Paul’s favorite exogenous ketones: A high-quality option is the NSF-certified goBHB from Clean Form Nutrition, where you can use the code Paul10 for a 10% discount: https://cleanformnutrition.com/products/go-bhb [https://cleanformnutrition.com/products/go-bhb]   Paul’s favorite allulose source: https://rxsugar.com [https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbkR6dWdpZ0NSSGVTMkc5YUV4QTYxcVdMMnJNQXxBQ3Jtc0tsR3lEUVpzYmNJanhQSGpDY2pyY0dHdTBOUzh5ZkVtM0IwQ3BYME9VUGY1WTkwbzFJRnZqeGVCcGIwWXBzMHQ5RFJraUFwMzlldDQyalExdktaOERBSlVqcDFCdnBBYzJRUWlhN082VzJYc19FWFhraw&q=https%3A%2F%2Frxsugar.com%2F&v=1s8fK5_4EWM] (discount: PAUL20)   Paul’s favorite health check-up for men or women: https://blokes.co/DRPAUL [https://joiandblokes.com/?rs=Referral&rn=Paul%20Reynolds&rc=DRPAUL] (discount: DRPAUL for 50% off of labs and smart supplements and 15% off all other products)

Leaky Gut Meets RAGE

In this episode of the College of Glycation, Professor Paul Reynolds reveals how glycation and leaky gut don’t just coexist — they actively multiply each other’s damage. A diet high in heat-generated advanced glycation end-products (AGEs) reshapes the gut microbiome, weakens the intestinal barrier, and allows bacterial lipopolysaccharide (LPS) to leak into the bloodstream in a state called metabolic endotoxemia. At the same time, elevated glucose and dietary AGEs keep the RAGE receptor constantly engaged. Because RAGE and TLR4 (the LPS receptor) physically interact and upregulate one another in a feed-forward loop, the leaked LPS lands on an immune system that glycation has already primed — dramatically amplifying inflammation and insulin resistance through shared NF-κB signaling.Drawing on landmark studies from Cani, Qu, Snelson & Coughlan, Yan, Uribarri, and others, Reynolds shows that this synergy is not additive but multiplicative. The same modern dietary pattern that generates AGEs also opens the door for LPS and then lowers the threshold for its inflammatory effects. Practical takeaways include shifting to gentler, moisture-based cooking methods to slash dietary AGEs, feeding butyrate-producing bacteria with fiber and dairy fats to strengthen tight junctions, and controlling blood glucose and insulin to disengage RAGE and raise the inflammatory threshold. Ultimately, glycation is reframed not merely as tissue damage, but as a recalibration of immune judgment — turning an ordinary bacterial leak into the spark that meets the gasoline. Paul’s favorite yerba mate: https://unicity.link/121f260bfe [https://unicity.link/121f260bfe]   Yerbe mate with a special formulated Balance fiber: https://ufeelgreat.com/c/PaulReynolds [https://ufeelgreat.com/c/PaulReynolds]   For the full Metabolic System storefront: https://shop.unicity.com/paulreynolds [https://shop.unicity.com/paulreynolds]   Paul’s favorite source for clean, earth-sourced essentials such as salt, electrolytes, hydration, pre-workout and more. Go to https://redmond.life [https://redmond.life/] and use PAULSALT for 15% discount.   Paul’s favorite exogenous ketones: A high-quality option is the NSF-certified goBHB from Clean Form Nutrition, where you can use the code Paul10 for a 10% discount: https://cleanformnutrition.com/products/go-bhb [https://cleanformnutrition.com/products/go-bhb]   Paul’s favorite allulose source: https://rxsugar.com [https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbkR6dWdpZ0NSSGVTMkc5YUV4QTYxcVdMMnJNQXxBQ3Jtc0tsR3lEUVpzYmNJanhQSGpDY2pyY0dHdTBOUzh5ZkVtM0IwQ3BYME9VUGY1WTkwbzFJRnZqeGVCcGIwWXBzMHQ5RFJraUFwMzlldDQyalExdktaOERBSlVqcDFCdnBBYzJRUWlhN082VzJYc19FWFhraw&q=https%3A%2F%2Frxsugar.com%2F&v=1s8fK5_4EWM] (discount: PAUL20)   Paul’s favorite health check-up for men or women: https://blokes.co/DRPAUL [https://joiandblokes.com/?rs=Referral&rn=Paul%20Reynolds&rc=DRPAUL] (discount: DRPAUL for 50% off of labs and smart supplements and 15% off all other products)

Glycocalyx and the Role of Glycation

In this episode of the College of Glycation, Paul Reynolds flips the script on sugar. While glycation is usually portrayed as the villain that damages proteins, lipids, and DNA through advanced glycation end products, today he reveals a place where sugar is actually the hero: the glycocalyx. This dense, gel-like sugar coat covers nearly every cell in your body, with its most important version lining the inside of all your blood vessels like an invisible protective forest.Paul explains the structure of the glycocalyx, its surprising thickness, and its four critical roles as a selective filter, a shear-stress sensor that triggers nitric oxide release, a physical and electrical barrier against clotting and inflammation, and a non-stick coating for smooth blood flow. He then shows how high blood sugar rapidly destroys this layer—halving its volume in just six hours through oxidative stress and the AGE-RAGE pathway that activates heparanase. The breakdown of the glycocalyx appears to be one of the earliest events in vascular dysfunction, atherosclerosis, and kidney disease, while also contributing to leaky gut. The solution, Paul argues, is the same approach that protects the rest of the body: keeping blood glucose stable and low so the cell can build and maintain this life-saving sugar coat instead of tearing it down.Paul’s favorite yerba mate: https://unicity.link/121f260bfe Yerbe mate with a special formulated Balance fiber: https://ufeelgreat.com/c/PaulReynolds For the full Metabolic System storefront: https://shop.unicity.com/paulreynolds Paul’s favorite source for clean, earth-sourced essentials such as salt, electrolytes, hydration, pre-workout and more. Go to https://redmond.life and use PAULSALT for 15% discount. Paul’s favorite exogenous ketones: A high-quality option is the NSF-certified goBHB from Clean Form Nutrition, where you can use the code Paul10 for a 10% discount: https://cleanformnutrition.com/products/go-bhb Paul’s favorite allulose source: https://rxsugar.com (discount: PAUL20) Paul’s favorite health check-up for men or women: https://blokes.co/DRPAUL (discount: DRPAUL for 50% off of labs and smart supplements and 15% off all other products)