Lectins bind to carbohydrates and attach to cells that allow them to do harm, as part of the plant’s self-defense mechanism against pests. Unfortunately, some may also cause trouble in humans.
Many lectins are pro-inflammatory, immunotoxic, neurotoxic and cytotoxic. Certain lectins may also increase blood viscosity, interfere with gene expression and disrupt endocrine function.
Among the most problematic lectin-containing foods are wheat and other seeds of the grass family, beans, soy and other legumes, and members of the nightshade family such as eggplants, potatoes, tomatoes and peppers.