Why eat whole grains?

Why eat whole grains?

The following is extracted from

http://www.m.webmd.com/healthy-beauty/features/best-anti-aging-foods?page=3

Whole Grains

A 2008 review of these diet-friendly foods - which include whole wheat, oats, and brown rice, and the bread, cereal, and other edibles made from them - concluded that a meal plan loaded with whole grains helps you stay slim, thanks, in part, to fiber's role in appetite control. Their low rankings on the glycemic index (a system that rates the effect of different carbohydrates on blood sugar levels) may also play a role.

A raft of research has also shown that whole grains offer protection against diabetes, heart disease, stroke, colon cancer, high blood pressure, and gum disease. These benefits are tied to the array of vitamins, minerals, plant chemicals, and again, fiber that work together to promote health. (That's why refined grains, which filter out these nutrients during manufacturing, and add some back later in the process, don't offer the same advantages.)