I love eating toasted bread even its made of unsold tasty loaf bread. Look at the picture below, notice the two pieces of toasted bread resembles the shape of bread loaf. Baker never make bread for the purpose of making loaf toasts. Bread toasting is done to save breads that are about to spoil.
Now, do you think toasted bread loafs are not safe to eat? The answer is either yes or no. Not safe if the baker is toasting spoiled loaf bread. Spoiled bread might contain harmful microorganisms. Toasted breads are still safe to eat if the process is carried out before the onset of spoilage.
I am not discouraging you to avoid eating such bread but be careful in choosing the brand to eat. We must always pay attention to our health. Eating a more expensive trusted brand can be cheaper than eating a low-cost and questionable food.