7. Eggplant
You may want to think twice before digging into that eggplant parmigiana, because eggplant contains high levels of oxalate which is a leading cause for kidney stones. Eggplant is also considered part of the nightshade family, and like peppers, eggplant can be a real issue for people who suffer from chronic inflammation. It’s best to avoid this vegetable if you are susceptible to either of these conditions.