Whole unprocessed oats are better for you as it takes longer to digest (steadier rise on blood sugar) compared to Cheerios and other processed cereals which are rapidly digested, creating a spike on blood sugar which doesn’t last through morning.

On the article, Dr. Mozaffarian also mentions about a practical way to choose healthful whole grain products: look for products with a total carbohydrate-to-fiber ratio that’s less than 10 to 1 (which means products with less total carbohydrate and more fiber are better).