Follower R.A. noticed that corn doesn’t appear on any of the lists of approved vegetables. The question, “Is corn okay if it’s organic?” is a good one.
Corn is a high carbohydrate vegetable. A ½-cup serving of corn has the same glycemic load as a baked potato with no skin and contains even more carbohydrates than the potato. If you want to eat corn, use it as a replacement for one of your carbohydrate options. For example, rather than eating a serving of bread, rice, beans, quinoa or fruit, you can have a serving of corn (1/2-cob or ½-cup.)
The choice of whether the corn needs to be organic or not depends more on your budget and preference for organic foods.