 Leafy greens such as spinach and kale, collard and mustard greens, grapes, peaches, pears, nectarines, apples, bell and hot peppers, cherries, blueberries, and green beans. Now, don't get me wrong. You can and should eat these delicious foods. Just make sure to rinse them under running water before you do. I'm Dr. Sanjay Gupta, helping you live a better life.