Can a traditional African diet help protect against inflammation?

Evan Walker
Evan Walker TheMediTary.Com |
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Switching to a traditional African diet helped protect against inflammation in a new study. Image credit: Westend61/Getty Images.
  • Chronic inflammation is a major driver of lifestyle-related diseases, like heart disease and type 2 diabetes.
  • New research highlights how profoundly a modern Western diet, high in processed foods and low in whole plant-based foods, can contribute to this chronic inflammation.
  • Experts recommend adopting more traditional, plant-rich diets to reduce inflammation and promote optimal immune function and metabolic health.

Recent research published in Nature Medicine highlights the rapid impact that dietary changes can have on immune and metabolic health.

Urbanization and increased availability of processed foods in Africa are shifting dietary patterns, with many people abandoning traditional diets for Western-style diets.

To explore the effects of this dietary shift, researchers from Radboud University Medical Center and Kilimanjaro Christian Medical University College investigated the health impacts at the cellular level.

Their findings indicate that just 2 weeks of adopting a Western diet over a traditional African diet can lead to increased inflammation, weakened immune responses, and disrupted metabolic pathways tied to lifestyle-related diseases.

In contrast, switching from a Western diet to a traditional African diet or consuming traditional fermented beverages may have anti-inflammatory benefits.

While more research is needed, these results support the idea that largely plant-based heritage diets — like traditional African, Mediterranean, and Latin American diets — can improve health and lower the risk of lifestyle-related diseases.

The researchers’ final analysis included only high-quality samples that met specific standards. Results were adjusted for factors including age, body mass index, and physical activity levels.

Their results showed that switching from a traditional African diet to a Western diet for 2 weeks disrupted key metabolic pathways linked to lifestyle-related diseases.

It also appeared to trigger a pro-inflammatory state involving white blood cells, inflammatory proteins in the blood, and changes in gene expression.

Additionally, their immune cells became less effective at responding to pathogens.

Conversely, transitioning from a Western diet to a mostly plant-based traditional African diet or consuming the fermented beverage resulted in mostly anti-inflammatory effects, including reduced inflammatory markers.

Certain immune and metabolic changes remained four weeks after the intervention, suggesting that even short-term dietary modifications might have some lasting effects.

This study may be the first thorough investigation of the health effects linked to a traditional African diet.

“Previous research has focused on other traditional diets, such as the Japanese or Mediterranean diet,” study author Quirijn de Mast, MD, PhD, internist-infectious disease specialist from Radboud University Medical Center, said in a press release.

“However, there is just as much to learn from traditional African diets, especially now, as lifestyles in many African regions are rapidly changing and lifestyle diseases are increasing. Africa’s rich diversity in traditional diets offers unique opportunities to gain valuable insights into how food influences health.”

– Quirijn de Mast, MD, PhD

In contrast to the nutrient-rich traditional African diet, the Western diet in the study lacked whole foods and included items such as:

  • processed meats
  • pizza
  • French fries
  • fried chicken
  • refined carbohydrates (like pancakes, spaghetti, and white bread).

Holland pointed out that “Western diets are typically high in refined sugars, saturated fats, and processed foods, which can promote inflammation and oxidative stress and disrupt immune regulation.”

This likely results from the direct impact of cholesterol, saturated fats, and sugars on immune and metabolic Health, as well as indirect effects through changes in gut bacteria and weight gain, according to the researchers.

“Given that Westernized diets promote chronic diseases, this study’s results are unsurprising—processed foods drive inflammation, whereas healthy traditional diets rich in antioxidants and anti-inflammatory compounds help mitigate metabolic and immune dysfunction.”

– Thomas M. Holland, MD, MS

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