Leaky Gut Meets RAGE

Glycation and Your Bones and Muscles

In this episode of the College of Glycation, Professor Paul Reynolds explains why bone strength is not the same as bone density and how glycation quietly sabotages both your skeleton and your muscles. Bone is a composite material — mineral provides stiffness while collagen acts as the flexible rebar that absorbs impact. Glycation creates random AGE crosslinks like pentosidine that weld collagen strands together, turning tough, energy-dissipating bone into rigid, brittle material that snaps instead of bending. This is the hidden reason people with type 2 diabetes fracture far more often (especially at the hip) despite normal or even high bone density on scans, and why tools like FRAX underestimate their risk. The same process stiffens muscle’s collagen scaffold and overactivates RAGE signaling, impairing satellite cell repair and driving muscle atrophy. The result is accelerated sarcopenia and frailty — brittle bones plus weak, poorly repairing muscle that makes falls more likely and more devastating.The good news is that this damage is not inevitable. Reynolds shows how controlling blood sugar slows glycation at the source, why aging bodies need higher protein intake to support muscle repair, and why resistance training is the single most powerful intervention — it strengthens both bone and muscle while improving glucose control in a virtuous cycle. Skin autofluorescence even offers a noninvasive way to track tissue AGE burden. Your bones and muscles are living, collagen-rich tissues that sugar can quietly sabotage, but the same habits that protect your metabolism also keep you strong, mobile, and independent for decades.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)

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)