Corn is my favorite vegetable. I know it's really a grain, but we usually eat it as whole corn. According to Healthline.com, here's why whole corn doesn't always digest: "Corn … has an outer shell of a compound called cellulose. Your body doesn't contain enzymes that specifically break down cellulose. However, your body can break down the food components that are inside corn."

So, corn is one of those foods that are more bio available in ground forms.