Anti-inflammation diets are trendy but your body needs 'acute inflammation' - Prof Jonny Peter, UCT

Tasleem Gierdien

Tasleem Gierdien

5 November 2025 | 9:59

Professor Jonny Peter, Head of Allergology and Clinical Immunology at the University of Cape Town, explains that some inflammation is normal, as the body needs ‘acute inflammation’ to fight infections.

Anti-inflammation diets are trendy but your body needs 'acute inflammation' - Prof Jonny Peter, UCT

A growing body of evidence suggests diets high in processed foods and low in fibre change gut bacteria and contribute to low-level, chronic inflammation.

Diets rich in fruits, vegetables, wholegrains, legumes and healthy fats and low in dairy, highly processed foods and added sugars are typically associated with lower levels of inflammation and are also growing in popularity.

"The immune system is operating across your body, and at any one time, it can simultaneously be dampening down inflammation and also producing life-saving inflammation that is absolutely necessary when fighting an infection," explains Peter.

"Immune cells move in, do tissue repair and all that is normal, healthy inflammation. This is acute inflammation and can be good for the body."

However, chronic inflammation is a long-term, slow-burning immune response that can damage healthy tissue and lead to variouschronic diseases. Unlike short-term (acute) inflammation that fights off an infection, chronic inflammation is a persistent state that can cause damage throughout the body, leading to conditions such as heart disease, diabetes, and arthritis.

"The key is to get into the details," he says when it comes to dietary changes such as eliminating specific food groups to combat inflammation. "It depends on what condition you're talking about and how the contribution of dietary strategies will improve your [health] outcomes."

Peter argues that 'nuance is lost' with elimination diets, which typically target healthy individuals and take a blanket approach, cutting out dairy or gluten, without considering specific health outcomes for each person, and may not work for everyone.

If someone has cardiovascular disease, abnormal lipids and obesity, a well-controlled diet and reduced weight loss could make a significant impact on their overall risk.

Many videos gaining traction on social media promote anti-inflammatory diets to lose weight or feel less bloated. Some posts pushing the value of these diets have over 20 million views.

"If they're saying avoid gluten, avoid dairy completely, when you look at that data, there is very little, if any data at all, that that is a good strategy," warns Peter.

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