The Truth About Inflammation

We hear the word inflammation all the time in health articles, on supplement labels, in doctor's offices. But what does it actually mean? And more importantly, why should you care about it?

Inflammation is not inherently bad. In fact, it is one of your body's most powerful defence mechanisms. When you cut your finger, catch a cold, or sprain your ankle, your immune system triggers an acute inflammatory response sending white blood cells, proteins, and other compounds to the site of injury to begin healing. According to a landmark review published in Nature Medicine, acute inflammation is a tightly regulated, protective process. The problem arises when that response never fully switches off (Furman et al., 2019).

This persistent, low-grade state is called chronic inflammation and it is at the root of some of the most serious diseases of our time.

Acute inflammation is short-term and purposeful. Think of redness around a wound, swelling after an injury, or a fever fighting off an infection. It resolves once the threat is gone, typically within days.

Chronic inflammation, on the other hand, is long-term, low-grade, and often completely silent. You may feel perfectly fine while your immune system is in a constant state of low-level alert which quietly damages tissues and organs over months or years.

Here is where nutrition science gets fascinating. Every single meal you eat sends a biochemical signal to your immune system. Certain foods trigger an inflammatory response; others actively dampen it.

Pro-inflammatory foods include:

• Ultra-processed foods: foods high in refined carbohydrates, artificial additives, and trans fats activate inflammatory pathways by disrupting the gut microbiome and spiking blood sugar (Monteiro et al., 2019).

• Refined sugars and sweetened drinks: excess sugar drives the production of inflammatory cytokines, particularly interleukin-6 (IL-6) and tumour necrosis factor-alpha (TNF-α) (Della Corte et al., 2021).

• Refined vegetable oils: oils high in omega-6 fatty acids (such as sunflower and corn oil) promote inflammation when consumed in excess, particularly when not balanced with omega-3 fatty acids (Simopoulos, 2016).

• Alcohol: chronic alcohol consumption activates the NF-κB inflammatory pathway and increases intestinal permeability, commonly known as "leaky gut" (Bishehsari et al., 2017).

Anti-inflammatory foods include:

• Fatty fish (salmon, mackerel, sardines) are rich in omega-3 fatty acids EPA and DHA, which reduce the production of pro-inflammatory eicosanoids.

• Leafy green vegetables (spinach, kale, broccoli) are packed with polyphenols and antioxidants that neutralise free radicals and reduce oxidative stress.

• Extra virgin olive oil contains oleocanthal, a compound that functions similarly to ibuprofen in inhibiting inflammatory enzymes COX-1 and COX-2.

• Berries and colourful fruits are high in anthocyanins, a class of flavonoids that have been shown to reduce CRP (C-reactive protein), one of the key markers of inflammation in the body.

• Turmeric contains an active compound, curcumin, which has been extensively studied for its ability to suppress NF-κB, one of the master regulators of the inflammatory response.

One of the most exciting areas of research right now is the relationship between your gut microbiome and systemic inflammation.

Your gut is home to approximately 38 trillion microorganisms which includes bacteria, fungi, and viruses that collectively make up your microbiome. When this ecosystem is balanced, it produces short-chain fatty acids (SCFAs) like butyrate that actively reduce inflammation. When it is disrupted, a condition called dysbiosis happens which can increase intestinal permeability, allowing bacterial toxins called lipopolysaccharides (LPS) to enter the bloodstream and trigger a systemic inflammatory response (Tilg & Moschen, 2014).

Many people with chronic inflammation have no obvious symptoms. However, some common signs include:

• Persistent fatigue that doesn't improve with rest

• Frequent infections or slow wound healing

• Digestive issues such as bloating, gas, or irregular bowel movements

• Joint or muscle pain without injury

• Brain fog or difficulty concentrating

• Skin conditions such as eczema, psoriasis, or acne

The most researched dietary pattern for reducing chronic inflammation is the Mediterranean diet, rich in olive oil, vegetables, legumes, whole grains, fish, and moderate amounts of red wine.

A large meta-analysis published in the European Journal of Clinical Nutrition found that adherence to the Mediterranean diet was associated with significantly lower levels of CRP, IL-6, and other inflammatory biomarkers, even after controlling for age, BMI, and physical activity (Schwingshackl & Hoffmann, 2014).

Beyond any single diet, the key principles for an anti-inflammatory way of eating are:

1. Eat more whole, minimally processed foods

2. Prioritise a wide variety of colourful fruits and vegetables

3. Include omega-3 rich foods at least 2-3 times per week

4. Limit ultra-processed foods, refined sugars, and seed oils

5. Support your gut with fibre-rich foods and fermented foods

6. Stay hydrated. Even mild dehydration can elevate inflammatory markers

Inflammation is not your enemy! it is your body doing its job. The goal is not to eliminate inflammation, but to keep it regulated and under control. And one of the most powerful tools you have to do that is sitting right on your plate, three times a day.

You don't need to overhaul your entire diet overnight. Start small: swap one ultra-processed snack for a handful of berries and walnuts. Add an extra serving of vegetables to dinner. Try salmon once a week. These small, consistent changes add up in ways that no single supplement ever could.

Your fork is one of the most powerful medicines you have. Use it wisely.

1. Furman, D. et al. (2019). Chronic inflammation in the etiology of disease across the life span. Nature Medicine, 25, 1822–1832.

2. Franceschi, C. et al. (2022). Inflammaging: a new immune-metabolic viewpoint for age-related diseases. Nature Reviews Immunology.

3. Monteiro, C.A. et al. (2019). Ultra-processed foods: what they are and how to identify them. Public Health Nutrition, 22(5), 936–941.

4. Simopoulos, A.P. (2016). An increase in the omega-6/omega-3 fatty acid ratio increases the risk for obesity. Nutrients, 8(3), 128.

5. Calder, P.C. (2017). Omega-3 fatty acids and inflammatory processes. Nutrients, 9(5), 1–18.

6. Beauchamp, G.K. et al. (2005). Phytochemistry: ibuprofen-like activity in extra-virgin olive oil. Nature, 437, 45–46.

7. Tilg, H. & Moschen, A.R. (2014). Microbiota and diabetes: an evolving relationship. Gut, 63(9), 1513–1521.

8. Stumpf, F. et al. (2023). Inflammation and Nutrition: Friend or Foe? Nutrients, 15(5), 1159.

9. Schwingshackl, L. & Hoffmann, G. (2014). Mediterranean dietary pattern, inflammation and endothelial function. European Journal of Clinical Nutrition, 68, 1248–1256.

10. Gupta, S.C. et al. (2013). Therapeutic roles of curcumin: lessons learned from clinical trials. The AAPS Journal, 15(1), 195–218.