Inflammation sits at the foundation of almost every disease process, and while some inflammation is a normal, healthy response, chronic low-grade inflammation from everyday food choices adds up over time. Here are eight common foods worth being mindful of, and why each one drives inflammation in the body. (Based on the insights of Dr. Suneel Dhand)
Key Takeaways
- Processed meats, white bread, protein bars, potato chips, and deep-fried foods all drive inflammation through different mechanisms — nitrosamines, blood sugar spikes, oxidized oils, and heavy processing.
- “Zero sugar” claims on protein bars can hide sugar alcohols like sorbitol and mannitol, which still affect blood sugar.
- Alcohol’s inflammatory impact depends heavily on context — metabolic health status and drinking amount both matter significantly.
- Plant-based burgers aren’t automatically anti-inflammatory; many are heavily processed with long ingredient lists.
- Sugar tops the list — a single can of soda contains roughly 9–10 teaspoons, against a bloodstream that normally holds only about one teaspoon at a time.
8. Processed Meats
Hot dogs, deli meats, and similar products are high in nitrates, which can convert into compounds called nitrosamines — toxic to the body, inflammatory, and potentially carcinogenic. The nitrates can trigger an almost immediate inflammatory response in the gut. It’s not just the nitrates, either: these meats are typically cooked at high, dry heat, which produces advanced glycation end products (AGEs) — chemical byproducts of searing and high-temperature cooking that generate free radicals and oxidize the vascular system, adding to the inflammatory load.
7. White Bread
White bread undergoes heavy processing and bleaching. Refined carbohydrates like this spike glucose and insulin levels, and insulin itself is a pro-inflammatory, fat-storage hormone. The processed flour also oxidizes cholesterol into a “stickier” form, contributing to the glucose intolerance picture. Minimally processed alternatives like sourdough, where natural fermentation bacteria help offset the sugar impact, are a meaningfully different product from heavily enriched, bleached white bread.
6. Protein Bars
Many protein bars function as hidden candy bars — heavily processed despite marketing themselves as health food. A “zero grams of sugar” label doesn’t tell the whole story: sugar alcohols like sorbitol and mannitol don’t have to be labeled as sugar but can still spike blood sugar in a similar way. The fiber in many bars also tends to be highly processed industrial fiber, quite different from the fiber found in whole foods like broccoli. A useful marker: minimally processed foods generally don’t have a shelf life stretching well over a year — if a product does, that’s often a sign of significant processing to keep it stable.
5. Potato Chips
Chips are typically deep-fried at high temperatures, often through multiple refrying cycles, using seed oils. This process can produce acrylamide, a compound identified as a potential carcinogen in high quantities. If you’re going to have chips, checking the ingredient list and choosing options cooked in a stable oil like cold-pressed olive oil or avocado oil (rather than oils refined using chemical processes) is a meaningfully different choice than a chip deep-fried in heavily refined oil — and moderation matters more than any single choice.
4. Deep-Fried Foods
Deep frying exposes food to extensive oxidation. Fried chicken from fast food chains, for example, often contains disproportionately more fried breading than actual chicken. The combination of highly oxidized, calorie-dense oil with foods that also spike blood sugar compounds the inflammatory effect — the frying process itself is often a bigger factor than the underlying food being fried.
3. Alcohol
Alcohol is toxic to essentially every cell in the body, disrupts the gut’s natural defensive barrier, and can raise blood pressure, adding shear stress to blood vessel walls. That said, context matters significantly here: for people who are otherwise metabolically healthy and drink in genuine moderation (roughly one drink a day), some research and observational patterns (including from long-lived populations in parts of the Mediterranean) suggest a less clear-cut negative effect, though what’s mixed into the drink matters too, since high-sugar cocktails compound the inflammatory response. For anyone who is already metabolically unhealthy, overweight, or insulin resistant — a category that includes a large share of the population — even modest alcohol intake is more likely to add meaningfully to existing inflammation. Excess or regular heavy drinking builds cumulative inflammatory harm regardless of starting health status.
2. Plant-Based/Veggie Burgers
Being plant-based doesn’t automatically mean anti-inflammatory. Many commercial plant burgers are heavily processed, built from long ingredient lists of chemicals, oils, and preservatives designed for extended shelf life — quite different from a homemade bean or vegetable-based patty made from whole ingredients. Reading the label matters here just as much as it does with any other processed food.
1. Sugar
Sugar tops the list. The body holds only about one teaspoon of sugar in the entire bloodstream at any time, and any excess triggers an urgent insulin response — insulin itself being pro-inflammatory and a fat-storage hormone. This applies whether the sugar comes in simple form, as syrup, or hidden in processed foods, cereals, pastries, and sodas. As a reference point, a single can of soda with roughly 36 grams of carbohydrates works out to around 9–10 teaspoons of sugar. Reducing sugar intake gradually — cutting back spoon by spoon rather than all at once — tends to be more sustainable than an abrupt change, and consistent reduction over time genuinely does get easier as taste preferences adjust.
The Bottom Line
For most of these foods, it’s the dose and frequency that matters most, not necessarily needing to eliminate them completely — an occasional treat is different from a daily habit. The broader goal is living in a way that keeps day-to-day inflammation low, since that translates into feeling more energetic, staying healthier, and reducing long-term disease risk. Reading ingredient labels and understanding what’s actually in a product, rather than trusting front-of-package health claims, is one of the most practical steps toward that goal.
Frequently Asked Questions
Do I need to eliminate all of these foods completely?
Not necessarily — for most of these foods, dose and frequency matter more than complete elimination. An occasional treat is different from a daily habit; the goal is keeping overall inflammation low, not perfection.
Are plant-based burgers a healthier alternative to meat?
Not automatically. Many commercial plant burgers are heavily processed with long ingredient lists of chemicals and preservatives. A homemade bean or vegetable-based patty is a very different product from a shelf-stable commercial one — reading the label matters.
Is a little alcohol okay, or should it be avoided entirely?
Context matters. For people who are otherwise metabolically healthy and drink in genuine moderation, the picture is less clear-cut. For anyone who’s already metabolically unhealthy, overweight, or insulin resistant, even modest alcohol intake is more likely to add to existing inflammation.
What’s the best way to cut back on sugar without it feeling impossible?
Gradual reduction tends to work better than an abrupt change — cutting back incrementally rather than eliminating sugar all at once. Taste preferences genuinely do adjust over time, making continued reduction easier.
Quick Start Checklist
- ☐ Swap white bread for sourdough or whole grain options
- ☐ Check protein bar labels for sugar alcohols and long ingredient lists
- ☐ Choose chips cooked in stable oils, and treat them as an occasional food
- ☐ Limit deep-fried foods and processed meats
- ☐ Read plant-based burger labels rather than assuming “plant-based” means healthy
- ☐ Gradually reduce added sugar rather than cutting it out all at once
Source: Dr. Suneel Dhand
Disclaimer: This article is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Consult your doctor or a registered dietitian before making significant dietary changes, especially if you have diabetes, are pregnant, or have another existing medical condition.