Toasts make a yummy breakfast. But at least some of you are concerned about whether they are healthy or not. To understand that, you should look at how a toast is different from bread. In fact, there is no major difference in the chemical composition of bread and toast except for some minor differences in the nutritional value. Bread is mainly carbohydrates, and so is toast. But as toasts will make you feel fuller, you consume less of it, which is positive. The downside is that toasts contain slightly less vitamin B than whole bread.