Is white bread a simple or complex carbohydrate?

White bread is considered a simple carbohydrate because it is made from refined flour, which has been stripped of much of its fiber and nutrients. This refining process results in a quicker digestion and absorption of the sugars, leading to rapid spikes in blood sugar levels. In contrast, complex carbohydrates are typically found in whole grains and contain more fiber, which aids in slower digestion and better blood sugar control.