Eating bread mold is not recommended as it can cause unpleasant symptoms such as nausea, vomiting, and diarrhea. Mold can also trigger allergic reactions and cause harmful infections, particularly if you have a weak immune system. Additionally, inhaling mold spores from bread can lead to breathing problems, including asthma, especially if you have an allergy to mold. Some molds can produce harmful and invisible poisons called mycotoxins, which can spread through bread, particularly when mold growth is heavy. Although most cases of ingested moldy bread wont lead to anything serious, getting sick from moldy bread is possible, though rare. If you accidentally eat moldy bread, you should be mindful of the fact that you ate it and make sure you dont have any symptoms for the rest of that day. Most likely, youll be okay. However, if you suddenly develop symptoms such as shortness of breath, nausea, an elevated temperature, or diarrhea, you should immediately seek medical help as allergic reactions can be delayed or they can be right away, depending on what kind of mold it was. Therefore, it is best to avoid eating bread with even the smallest traces of mold, and the entire loaf of bread should be discarded if it has developed mold.