Why does whole wheat bread have more calories than white?

Whole wheat bread typically has more calories than white bread because it retains the bran and germ of the wheat grain, which contain additional nutrients and fats. This results in a denser bread with higher fiber and protein content, contributing to the overall calorie count. Additionally, whole wheat flour is less processed than white flour, which may lead to a slight increase in calories due to the presence of these whole grain components. However, the nutritional benefits of whole wheat often outweigh the calorie difference.