Lectins

Lectins are a diverse class of carbohydrate-binding proteins found in high concentrations in many plant-based foods, particularly legumes, grains, and nightshade vegetables. In nature, they serve as a defense mechanism for plants against pests and pathogens. However, in human physiology, they are often considered antinutrients because they are resistant to digestive enzymes and can bind to the epithelial lining of the gastrointestinal tract, potentially disrupting the integrity of the intestinal barrier.

When the gut barrier is compromised, a condition often referred to as increased intestinal permeability or 'leaky gut,' lectins and other food particles can enter the bloodstream, triggering systemic immune responses and chronic inflammation. This inflammatory state is a significant contributor to metabolic dysfunction and autoimmune conditions. Dietary protocols that emphasize a lectin-free or lectin-conscious approach aim to reduce this inflammatory burden, thereby supporting gut healing and improving insulin sensitivity.