Dietary Inflammation and Chronic Disease Outcomes

Dietary inflammation arises when habitual intake of foods and nutrients provokes a sustained, low-grade immune response. This protracted inflammatory state contributes to the initiation and progression of a range of non-communicable diseases, including cardiovascular disorders, metabolic dysfunction, neurodegeneration and several cancers. The inflammatory potential of a diet can be quantified using indices that integrate effects of individual nutrients and food groups on key biomarkers such as C-reactive protein, interleukins and tumour necrosis factor. A pattern rich in fruits, vegetables, whole grains, nuts and fatty fish tends to counteract inflammatory pathways, whereas diets high in refined carbohydrates, red and processed meats, added sugars and certain saturated fats amplify cytokine production, endothelial dysfunction and oxidative stress. Growing evidence links such pro-inflammatory patterns to increased incidence of myocardial infarction, insulin resistance, cognitive decline and poorer cancer prognosis. Understanding these connections supports global public health strategies and dietary guidelines aimed at lowering inflammation to prevent chronic disease and improve long-term outcomes.

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Dietary Inflammation and Chronic Disease Outcomes publication trend

The graph below shows the total number of articles in dietary inflammation and chronic disease outcomes across all publications each year (not limited to Nature Index journals).

Technical terms

Dietary Inflammatory Index (DII): A literature-derived score that estimates the inflammatory potential of an individual’s habitual diet by weighting nutrients and foods according to their effects on inflammatory biomarkers.

Chronic systemic inflammation: A prolonged, low-grade activation of the immune system characterised by elevated circulating cytokines, which contributes to the development and progression of many non-communicable diseases.

Pro-inflammatory diet: A dietary pattern high in components known to stimulate inflammatory pathways, such as refined sugars, processed meats and certain saturated fats, leading to increased cytokine production and oxidative stress.

References

1. Association of pro-inflammatory diet with increased risk of all-cause dementia and Alzheimer's dementia: a prospective study of 166,377 UK Biobank participants. BMC Medicine (2023).
2. Dietary patterns related to biological mechanisms and survival after breast cancer diagnosis: results from a cohort study. British Journal of Cancer (2023).
3. Comparison of Intake of Food Groups Based on Dietary Inflammatory Index (DII) and Cardiovascular Risk Factors in the Middle-Age Population of Lower Silesia: Results of the PURE Poland Study. Antioxidants (2023).