Can mold on bread make you sick? Yes, if the type of mold contaminating the bread is toxigenic (toxin producer) and it has produced significant amounts of the toxin. Whether one gets sick or not also depends on individual's susceptibility. Some people may require relatively high concentrations of the toxin to get sick. Sadly, in major towns of some poor countries street people including children eat moldy food from garbage bins, but thank God they rarely get sick.