Grade: mostly good

As expected vegetables are good for you.  Most colorful vegetables are low in carbohydrates (corn is an exception), while starchy vegetables can actually be a rich source of carbs.  Because the body can readily convert the starches in potatoes and corn into glucose and cause a spike in glucose levels, they should be eaten sparingly.

For more information on why a glucose spike should be avoided click here.

The Glycemic Index was created to rate foods for their effect on glucose levels.