lectin

Lectins are specialized proteins often discussed in the context of nutrition and immunology. In a biological sense, they act as molecular "hooks" that recognize and bind to specific sugar molecules on the surfaces of cells, which can influence cell signaling and immune responses.

In dietary contexts, the term often carries a negative connotation, as certain lectins found in legumes and grains are viewed as antinutrients that can interfere with nutrient absorption or cause digestive distress if the food is not processed through soaking, sprouting, or cooking.