Chronic inflammation is a low-grade, persistent immune response that, unlike the acute inflammation you feel after a cut or infection, often produces no obvious symptoms for years. Reducing it requires a combination of dietary changes, consistent exercise, better sleep, stress management, and attention to environmental exposures. The good news: most of the effective interventions are things you can start today without a prescription.
How to Know If You Have It
Chronic inflammation doesn’t usually announce itself with pain or swelling. It’s typically detected through a blood test called high-sensitivity C-reactive protein (hs-CRP). Your results fall into three risk categories: below 1.0 mg/L is low risk, 1.0 to 3.0 mg/L is intermediate, and above 3.0 mg/L is high risk for cardiovascular events. If you suspect chronic inflammation because of fatigue, joint stiffness, or a family history of heart disease or autoimmune conditions, asking your doctor for this test gives you a concrete baseline to measure your progress against.
Other inflammatory markers, including IL-6 and TNF-alpha, are used in research settings but aren’t part of routine checkups. CRP is the most accessible and widely validated marker for tracking systemic inflammation over time.
Build Your Diet Around Anti-Inflammatory Foods
The foods you eat directly influence the chemical signals that drive inflammation. Polyphenols, the compounds concentrated in blueberries, strawberries, apples, dark chocolate, and hazelnuts, block enzymes that produce inflammation-promoting molecules called prostaglandins and leukotrienes. Flavonoids (a type of polyphenol found in colorful fruits, vegetables, and tea) go further by interfering with the transcription factors that tell your cells to ramp up inflammatory activity in the first place. They also act as antioxidants, neutralizing free radicals that would otherwise sustain the cycle.
Omega-3 fatty acids from fatty fish, walnuts, and flaxseed are the other major dietary lever. Clinical trials consistently show that 1 to 3 grams per day of combined EPA and DHA (the two active forms of omega-3) produce the most reliable reductions in CRP, TNF-alpha, and IL-6. If you’re using a supplement, check the label for the combined EPA and DHA total, not just “fish oil,” since many capsules contain far less active omega-3 than the total oil amount suggests.
Rather than thinking about individual superfoods, the overall pattern of your diet matters most. Researchers use something called the Empirical Dietary Inflammatory Index, which reliably predicts circulating levels of inflammatory markers based on your habitual eating patterns. Diets heavy in processed foods, refined sugar, and seed oils score poorly. Diets rich in vegetables, fruits, whole grains, nuts, and fatty fish score well. The pattern is more powerful than any single ingredient.
Exercise at the Right Intensity
Regular exercise lowers inflammatory markers, but intensity matters. An eight-week study comparing low-intensity walking (about 55% of maximum effort) to higher-intensity running (about 70% of maximum effort) three times per week found that only the higher-intensity group achieved a significant reduction in CRP. Both groups lowered TNF-alpha, but the runners saw a greater drop. The higher-intensity sessions were shorter, around 40 minutes compared to 60 minutes for the walkers, so the total exercise volume was equivalent.
This doesn’t mean you need to sprint. “Higher intensity” in this context means a pace where you can talk but not comfortably hold a conversation: a brisk jog, cycling with resistance, or a faster-paced swim. Three sessions per week at this level appears to be a practical threshold for meaningful CRP reduction. If you’re currently sedentary, even lower-intensity walking still reduces TNF-alpha, so start where you are and build up.
Prioritize Sleep
Sleep deprivation is one of the most potent, and most overlooked, drivers of chronic inflammation. Losing a single night of sleep triggers a more than threefold increase in IL-6 gene activity and a twofold increase in TNF-alpha gene activity by the following morning. These aren’t small fluctuations. They represent the same inflammatory signals involved in autoimmune disease and cardiovascular damage, switched on simply because you didn’t sleep.
The practical target is seven to nine hours for most adults. If you consistently get under six hours, addressing that deficit may do more for your inflammatory markers than any supplement or dietary change. Common strategies that improve sleep quality include keeping a consistent wake time (even on weekends), limiting screens in the hour before bed, and keeping your bedroom cool and dark.
Activate Your Body’s Built-In Anti-Inflammatory System
Your vagus nerve, the longest nerve running from your brainstem to your abdomen, controls a powerful anti-inflammatory circuit. When the vagus nerve fires, it releases acetylcholine, a chemical messenger that directly suppresses the production of TNF-alpha, IL-6, and other inflammatory signals from immune cells called macrophages. This works through a specific receptor on those immune cells. Importantly, this pathway dials down the pro-inflammatory signals without suppressing anti-inflammatory ones like IL-10, so it’s a targeted brake rather than a system-wide shutdown.
You can stimulate this pathway without medical devices. Slow, deep breathing with a long exhale (inhale for 4 counts, exhale for 6 to 8) activates vagal tone. So does cold water exposure on your face or neck, meditation, and moderate aerobic exercise. These aren’t just relaxation techniques. They’re activating a specific neurological circuit that physically reduces inflammatory cytokine production in your tissues.
Chronic psychological stress does the opposite, keeping the sympathetic (“fight or flight”) nervous system dominant and suppressing vagal activity. If you live in a state of constant low-level stress, your body’s natural inflammation brake is essentially disengaged.
Protect Your Gut Barrier
Your intestinal lining is a single-cell-thick barrier separating the contents of your gut from your bloodstream. When that barrier becomes more permeable (sometimes called “leaky gut”), bacterial fragments called lipopolysaccharides (LPS) cross into circulation. LPS activates a receptor on immune cells called TLR-4, which triggers a systemic inflammatory cascade. Research has confirmed that LPS directly increases intestinal permeability through this same TLR-4 pathway, creating a self-reinforcing loop: more leakiness leads to more LPS exposure, which leads to more leakiness.
Protecting gut barrier integrity involves eating enough fiber to feed beneficial bacteria, limiting alcohol (which directly damages the intestinal lining), and including fermented foods like yogurt, kefir, kimchi, or sauerkraut. Chronic use of nonsteroidal anti-inflammatory drugs like ibuprofen, ironically, also increases intestinal permeability, so relying on them regularly for pain may worsen the underlying problem.
Reduce Environmental Exposures
Fine particulate air pollution (PM2.5) is a significant and underappreciated contributor to chronic inflammation, particularly if you have metabolic syndrome. A large national study of over 7,000 adults found that a 10 microgram-per-cubic-meter increase in PM2.5 exposure was associated with a 10.1% increase in CRP levels among people with metabolic syndrome. About one-third of U.S. adults have metabolic syndrome, making this relevant to a large portion of the population.
Practical steps include using a HEPA air purifier in your bedroom, checking local air quality indexes before exercising outdoors, avoiding exercising near heavy traffic, and keeping car windows closed in congested areas. If you live in an area with poor air quality, these measures can meaningfully reduce your daily inflammatory burden.
Supplements That Have Evidence
Two supplements stand out for having consistent clinical evidence behind them. Curcumin, the active compound in turmeric, blocks a key inflammatory pathway involved in producing COX-2 (the same enzyme targeted by drugs like ibuprofen). The challenge is that curcumin is poorly absorbed on its own. Taking it with piperine, a compound from black pepper, significantly increases uptake. A studied dose of 500 mg of curcumin with 20 mg of piperine daily was enough to inhibit the inflammatory response in clinical trials.
Omega-3 fatty acids, as mentioned above, have the strongest supplement evidence at 1 to 3 grams per day of combined EPA and DHA. Beyond those two, vitamins D and C, folic acid, and garlic have shown anti-inflammatory effects in studies, though the evidence is less consistent.
Supplements work best as additions to the dietary, exercise, and sleep strategies above, not replacements for them. No capsule will overcome the inflammatory effects of chronic sleep deprivation or a diet built on processed food.
Prescription Options for Persistent Inflammation
For people whose chronic inflammation is tied to conditions like fibromyalgia, Crohn’s disease, or complex regional pain syndrome, low-dose naltrexone (LDN) has emerged as an off-label option with promising clinical data. The typical dose is 4.5 mg taken before bedtime. In fibromyalgia trials, 57% of participants experienced a significant reduction in pain (defined as at least a one-third decrease). In Crohn’s disease studies, over 80% of participants showed meaningful improvement. LDN is not FDA-approved for any inflammatory condition, and it requires a prescription and a doctor willing to prescribe it off-label, but it has a mild side-effect profile, with some people reporting insomnia that resolves by switching to morning dosing or reducing the dose to 3.0 mg.