For thousands of years, bread and cereals have been the staple food of the people. Nutritionally is valuable but our customs have undergone many myths:
Whole wheat bread is less fattening.
This is completely false, both the bread as white bread provide the same amount of calories are 258 kcal / g of white bread and 238 kcal / g of bread. What is certain is that the bread has fiber and thus helps regulate the bowel and makes it more satiating hunger and so take longer to appear.