There are two different types of fiber: soluble and insoluble. Water-soluble fiber turns to gel during the digestive process, slowing it down and helping control blood sugar spikes. Wheat bran is an insoluble fiber, meaning it makes its way through the digestive tract without breaking down because it does not blend with water. This adds bulk, which helps speed food and waste through the gut. Most nutritionists agree that the human diet is lacking in fiber-rich foods and recommend between 25 and 35 grams per day. Wheat bran offers 25 grams of fiber per one-cup serving.

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