Nightshades are a family of plants that include tomatoes, peppers, eggplant, and potatoes.u003cbr/u003eThere is a possibility that they may contribute to inflammation and auto-immune disease, such as IBD (or leaky gut syndrome) and arthritis. [u003ca href=u0022https://www.healthline.com/nutrition/nightshade-vegetables#section3u0022 target=u0022_blanku0022 rel=u0022noreferrer noopeneru0022u003esourceu003c/au003e]u003cbr/u003eMost people, however, do not need to stay away from nightshade vegetables and, in fact, will benefit from their many nutrients. Please consult your health care provider if you have concerns.