Gut-Brain Highway: How Your Inner Ecosystem Talks to Your Mind

Highly Processed Foods & Inflammation: What You Need to Know

By Kim Larson — Larson HealthLet’s Talk Real for a MinuteHey friend, Kim here 👋. Let’s have an honest talk about something that affects almost all of us: highly processed foods. These are the foods that come in flashy packages, usually with long ingredient lists, and they’re so common in today’s diet that we barely notice them anymore.The problem? They keep our bodies in a state of chronic, low-grade inflammation—and that “fire inside” can set the stage for conditions like arthritis, diabetes, dementia, heart disease, and even autoimmune flares.Don’t worry, I’m not here to guilt-trip you out of ever eating chips again. I’m here to give you the facts, in plain English, and show you simple swaps you can make this week that calm inflammation and help you feel like you again.What Are “Highly Processed Foods”?Researchers call them ultra-processed foods (UPFs). These aren’t just frozen veggies or plain canned beans (those are fine, by the way!). UPFs are foods that are:Built from refined starches/sugars, industrial oils, and additivesLow in fiber, vitamins, and mineralsDesigned to be hyper-palatable (you know, the “can’t eat just one” effect)Think: sodas, packaged pastries, sweetened yogurts, chips, energy bars, fast food, frozen pizza, flavored cereals, and many packaged snacks.Studies link high UPF intake to more inflammatory markers in the blood and higher risk of chronic disease.Why Do Processed Foods Stoke Inflammation?1. Blood Sugar RollercoasterAll that refined sugar and white flour sends your blood sugar spiking, then crashing. Over time, this rollercoaster pushes your immune system into a “low simmer” of inflammation.➡️ Want to see how I help balance blood sugar with food? Check out my recipe for Steak Bites & Mashed Sweet Potatoes.2. Gut Irritants from AdditivesSome common food additives like carboxymethylcellulose (CMC) and polysorbate-80 (often in packaged ice creams, dressings, and sauces) have been shown to thin the gut lining and irritate the microbiome. When the gut lining is irritated, the immune system turns on.3. Advanced Glycation End Products (AGEs)When foods are cooked at high, dry heat (like fried fast food), they form compounds called AGEs. Too many AGEs = more oxidative stress and inflammation in your body.4. Damaged Oils from Deep FryingIt’s not just the oil—it’s the process. Reheated oils (like in fast food fryers) break down into compounds that are toxic to our cells.➡️ Listen to my podcast episode “Fasting Hacks You Need to Know About” where I talk more about how food quality matters during fasting.Diseases Linked to InflammationArthritis: Western, processed diets are linked with more joint pain and swelling. Mediterranean-style eating (more whole foods, olive oil, fish) reduces inflammation.Type 2 Diabetes: More UPFs = higher risk of insulin resistance and diabetes.Dementia: Studies show higher UPF intake increases dementia risk, while whole-food diets lower it.Heart Disease & Autoimmune Issues: Chronic inflammation from diet plays a huge role in both.What You Can Do This WeekMy “Calm the Fire” BasicsCrowd in whole foods. Build meals around protein + colorful plants + healthy fats (like olive oil, nuts, avocado).Swap UPFs for upgrades:Soda → sparkling water + splash of juicePackaged cookies → apple slices + almond butterProcessed deli meats → roasted chicken or beansWhite crackers → whole grain optionsCheck labels. If you see CMC or polysorbate-80, put it back.Cook wetter. Stew, steam, or braise more often to lower AGEs.Fiber is your friend. Aim for 25–35g/day from plants and whole grains.Copy and Printable: Your Quick GuideUPF Swap ListSoda → Sparkling water + fruitChips → Air-popped popcornPackaged sweets → Fruit + nutsProcessed meats → Lentils, beans, roasted poultryWhite bread → Whole grain sprouted bread or gluten free breadAdditives to WatchCarboxymethylcellulose (CMC)Polysorbate-80High-fructose corn syrupArtificial colors/flavors👉 Download this printable card here Final ThoughtsYou don’t have to be perfect. Functional medicine isn’t about restriction—it’s about making swaps that give your body what it needs to cool the fire. If you start by reducing UPFs and focusing on colorful, whole foods, you’ll see inflammation markers drop, energy rise, and long-term risk for arthritis, diabetes, and dementia shrink.And remember—every small choice counts.Call to ActionIf you’re ready to learn more about how to lower inflammation with food, subscribe to my podcast at Larson Health Podcast or check out my latest recipe Pesto & Hummus Turkey Roll Ups. By Kim Larson — Larson HealthLet’s Talk Real for a MinuteHey friend, Kim here 👋. Let’s have an honest talk about something that affects almost all of us: highly processed foods. These are the foods that come in flashy packages, usually with long ingredient lists, and they’re so common in today’s diet that we barely notice them anymore.The problem? They keep our bodies in a state of chronic, low-grade inflammation—and that “fire inside” can set the stage for conditions like arthritis, diabetes, dementia, heart disease, and even autoimmune flares.Don’t worry, I’m not here to guilt-trip you out of ever eating chips again. I’m here to give you the facts, in plain English, and show you simple swaps you can make this week that calm inflammation and help you feel like you again.What Are “Highly Processed Foods”?Researchers call them ultra-processed foods (UPFs). These aren’t just frozen veggies or plain canned beans (those are fine, by the way!). UPFs are foods that are:Built from refined starches/sugars, industrial oils, and additivesLow in fiber, vitamins, and mineralsDesigned to be hyper-palatable (you know, the “can’t eat just one” effect)Think: sodas, packaged pastries, sweetened yogurts, chips, energy bars, fast food, frozen pizza, flavored cereals, and many packaged snacks.Studies link high UPF intake to more inflammatory markers in the blood and higher risk of chronic disease.Why Do Processed Foods Stoke Inflammation?1. Blood Sugar RollercoasterAll that refined sugar and white flour sends your blood sugar spiking, then crashing. Over time, this rollercoaster pushes your immune system into a “low simmer” of inflammation.➡️ Want to see how I help balance blood sugar with food? Check out my recipe for Steak Bites & Mashed Sweet Potatoes.2. Gut Irritants from AdditivesSome common food additives like carboxymethylcellulose (CMC) and polysorbate-80 (often in packaged ice creams, dressings, and sauces) have been shown to thin the gut lining and irritate the microbiome. When the gut lining is irritated, the immune system turns on.3. Advanced Glycation End Products (AGEs)When foods are cooked at high, dry heat (like fried fast food), they form compounds called AGEs. Too many AGEs = more oxidative stress and inflammation in your body.4. Damaged Oils from Deep FryingIt’s not just the oil—it’s the process. Reheated oils (like in fast food fryers) break down into compounds that are toxic to our cells.➡️ Listen to my podcast episode “Fasting Hacks You Need to Know About” where I talk more about how food quality matters during fasting.Diseases Linked to InflammationArthritis: Western, processed diets are linked with more joint pain and swelling. Mediterranean-style eating (more whole foods, olive oil, fish) reduces inflammation.Type 2 Diabetes: More UPFs = higher risk of insulin resistance and diabetes.Dementia: Studies show higher UPF intake increases dementia risk, while whole-food diets lower it.Heart Disease & Autoimmune Issues: Chronic inflammation from diet plays a huge role in both.What You Can Do This WeekMy “Calm the Fire” BasicsCrowd in whole foods. Build meals around protein + colorful plants + healthy fats (like olive oil, nuts, avocado).Swap UPFs for upgrades:Soda → sparkling water + splash of juicePackaged cookies → apple slices + almond butterProcessed deli meats → roasted chicken or beansWhite crackers → whole grain optionsCheck labels. If you see CMC or polysorbate-80, put it back.Cook wetter. Stew, steam, or braise more often to lower AGEs.Fiber is your friend. Aim for 25–35g/day from plants and whole grains.Copy and Printable: Your Quick GuideUPF Swap ListSoda → Sparkling water + fruitChips → Air-popped popcornPackaged sweets → Fruit + nutsProcessed meats → Lentils, beans, roasted poultryWhite bread → Whole grain sprouted bread or gluten free breadAdditives to WatchCarboxymethylcellulose (CMC)Polysorbate-80High-fructose corn syrupArtificial colors/flavors👉 Download this printable card here Final ThoughtsYou don’t have to be perfect. Functional medicine isn’t about restriction—it’s about making swaps that give your body what it needs to cool the fire. If you start by reducing UPFs and focusing on colorful, whole foods, you’ll see inflammation markers drop, energy rise, and long-term risk for arthritis, diabetes, and dementia shrink.And remember—every small choice counts.Call to ActionIf you’re ready to learn more about how to lower inflammation with food, subscribe to my podcast at Larson Health Podcast or check out my latest recipe Pesto & Hummus Turkey Roll Ups.