A large portion of the immune system interacts directly with the gut. The immune system is constantly sampling what passes through the digestive tract.
Subcomponents of Nutrition and Immunity
Gut-immune interface
The gut lining and microbiome help train immune tolerance—what to respond to and what to ignore.
Ultra-processed foods
Highly processed foods often disrupt microbiome balance and increase inflammatory signaling, creating unnecessary immune “noise.”
Micronutrient sufficiency
Vitamins and minerals support normal immune processes, but they work best when delivered in the context of whole foods.
Energy stability
Erratic blood sugar and inadequate protein intake can elevate stress hormones, indirectly impairing immune regulation.
Practical direction: Prioritize foods that resemble their natural form. Anchor meals around protein, plants, and quality fats.
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