Eating bread will not cause you to gain weight. However, eating too much bread will, as will eating too many calories. Bread contains the same number of calories per ounce as protein. Each piece of whole wheat bread and white bread contains the same number of calories. A slice of rye bread has more than twice as many calories as a slice of white bread. The most important thing is to eat a balanced diet full of fruits, vegetables, and starchies (grains). Avoid going straight for the sandwich baggies or choosing the basic loaf on your supermarket shelf. Choose products with at least 2 grams of fiber per slice or cup. Whole-wheat flour, oatmeal, and cornmeal are all good sources of fiber that will help you avoid storing energy as fat. French bread is rich in calories. One slice of bread can contain as many as 400 calories. That's about 20 percent of your daily value of calcium, vitamin B12, iron, and zinc. Also high in sodium. Calories from bread account for a small percentage of your total daily intake, so having several slices a day should not have an adverse effect on your weight loss efforts.