Certain high fat foods

Immune dysfunction has been linked to a diet high in saturated fats and low in unsaturated fats. Saturated fat consumption can activate particular signaling pathways that cause inflammation, hence impairing immunological function. High-fat diets may also make you more vulnerable to infection by lowering your immune system and white blood cell activity. Furthermore, rodent studies have revealed that high-fat diets might alter gut flora and harm the intestinal lining, thereby raising the risk of infection and illness.

More human research is needed to better understand how various fatty acids influence the immune system. However, eating a well-balanced diet rich in fiber and healthy fat sources is likely to be beneficial to immunological health.