The Hidden Foods Secretly Driving Your Inflammation  

Contrary to a lot of wellness rhetoric, inflammation isn’t driven by a single “bad” food, but rather, it’s shaped by our overall dietary pattern. What we eat consistently, what we under-consume, and what those gaps are replaced with all interact to create either a more reactive or more regulated internal environment. 

Dietary inflammation tends to emerge when ultra-processed foods displace whole foods, when fibre intake is too low to support the gut, when omega-3 fats are insufficient to balance omega-6 intake, when protein is inadequate, and when alcohol intake is frequent enough to disrupt metabolic regulation. Layer onto that unstable blood sugar, and the system becomes more prone to low-grade, chronic inflammation. 

This kind of inflammation doesn’t always present as obvious illness, but instead, as things like fatigue, digestive symptoms, skin changes, disrupted appetite cues, or a gradual drift in cardiometabolic health. 

What is an anti-inflammatory dietary pattern? Here’s what you need to know.  

It’s Low in Ultra-Processed Foods 

Ultra-processed foods (UPFs) are formulations made mostly or entirely from industrial ingredients, often with little intact whole food remaining. They typically include additives, emulsifiers, refined starches, and seed oils, and are engineered for both hyper-palatability and convenience. 

Common culprits include packaged snacks, sugary cereals, ready meals, processed meats, soft drinks, and baked goods made with refined flour and added sugars. 

From a biological standpoint, UPFs influence inflammation through several overlapping pathways. One of the most immediate is blood sugar disruption. Because these foods are typically made with rapidly absorbed carbohydrates with little to no fibre, they tend to drive repeated spikes and crashes in glucose levels. Over time, this pattern increases oxidative stress and promotes inflammatory signalling, particularly when this variability becomes a daily norm rather than an occasional event. (1) 

Alongside this, ultra-processed foods can also affect our gut barrier integrity. Certain additives, including emulsifiers, have been shown to alter the composition and function of the gut microbiota. This shift can weaken the intestinal lining, increasing permeability - often referred to as “leaky gut.” When the barrier becomes more permeable, bacterial fragments and toxins can pass more easily into circulation, triggering immune activation and contributing to low-grade, chronic inflammation. (2) 

It Contains Little Alcohol 

Alcohol holds a complicated place in nutrition: whilst it is socially normal and is often seen as moderate or harmless, major health organisations now agree there is no truly safe level of intake from a biological POV. Because it’s a toxin, the liver prioritises alcohol metabolism above almost all other processes, and while this is happening, functions like blood sugar regulation, lipid metabolism, and detoxification are temporarily deprioritised. 

One of the key ways that alcohol contributes to inflammation is through its impact on the liver. Even moderate intake, when repeated over time, can increase markers of liver stress and inflammation. (3) Alongside this, alcohol disrupts blood sugar regulation. It can lead to both immediate spikes and delayed drops in glucose levels, particularly when consumed without food, creating a less stable metabolic environment. 

Alcohol also affects appetite regulation. By altering hunger hormones such as ghrelin and leptin, it can increase overall calorie intake and shift food choices toward lower-quality, more energy-dense options. Over time, this compounds its inflammatory effects by influencing overall dietary patterns. (4) 

It’s High in Fibre 

Fibre is one of the most consistently under-consumed nutrients in modern diets, and its absence can have a disproportionately large impact on inflammation. Good sources of fibre include vegetables, fruits, legumes, whole grains, nuts, and seeds, all of which provide the raw material that our gut rely on to function optimally. 

Fibre supports the gut microbiome by acting as fuel for beneficial bacteria in the gut, where is it fermented into compounds called short-chain fatty acids (SCFAs). These SCFAs help reduce inflammation and strengthen the integrity of the gut lining, creating a barrier that prevents inappropriate immune activation. Fibre also plays a crucial role in blood sugar regulation because it slows the absorption of glucose and reduces spikes, thus supporting insulin sensitivity. (5,6) 

Beyond metabolic effects, fibre indirectly modulates the immune system. A healthy, fibre-fed microbiome communicates with the immune system in ways that reduce excessive inflammatory responses, helping the body maintain a calmer internal environment. Consistently low fibre intake disrupts these processes, increasing susceptibility to chronic, low-grade inflammation. 

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