Brown bread is healthier than white bread for several reasons. White bread contains highly refined carbohydrates that cause blood sugar and insulin levels to spike, which can lead to fat storage. It also contains synthetic additives. Brown bread, on the other hand, is made from whole wheat and contains more fiber, vitamins, and minerals. It has a lower glycemic index, which prevents sharp rises in blood sugar. Brown bread is also less processed and does not have synthetic additives removed during production like white bread. Overall, brown bread is the healthier choice due to its nutritional composition and lower impact on blood sugar levels.