What are nightshades and in which foods are they found?
Overview - the basics about nightshade foods
Potatoes, tomatoes, sweet and hot peppers, eggplant, tomatillos, tamarios, pepinos, pimentos, paprika, cayenne, and Tabasco sauce are classified as nightshade foods. A particular group of substances in these foods, called alkaloids, can impact nerve-muscle function and digestive function in animals and humans, and may also be able to compromise joint function. Because the amount of alkaloids is very low in nightshade foods when compared with other nightshade plants, health problems from nightshade foods may only occur in individuals who are especially sensitive to these alkaloid substances. Since cooking only lowers alkaloid content of nightshade foods by about 40-50%, highly sensitive individuals may want to avoid this category of food altogether, while non-sensitive individuals may be able to eat these foods, especially in cooked form, without problem. Green and sprouted spots on potatoes usually reflect high alkaloid content, even though the green itself involves the presence of chlorophyll, not alkaloids. For this reason, sprouted areas should always be thoroughly removed before potato cooking, or the potatoes should be discarded altogether.
