Fiber is especially important to a diabetics diet. We should have fiber, along with Vitamin D, Calcium, and Omega-3s at every meal. (These guidelines for these 4 particular fat-fighters are a good idea for anyone, diabetic or not.) Here are a few examples of the fiber content of some common foods: 1 medium apple = about 3 grams, 1/2 cup fresh raspberries = 4 grams, 1 cup cooked fresh spinach = 4 grams, and 1/2 cup chickpeas = 6 gram.
Note: I copied and pasted this from my diabetic blog, thus the colored background. This is good advice for anyone, not just diabetics.