Overnight cooked eggs can be eaten specifically according to the eggs have not deteriorated to determine.
If the overnight cooked eggs in the case of suitable storage conditions, and did not find a discoloration, odor and other deterioration phenomena, generally can be eaten, it is recommended to peel off the egg shell and carefully observe, smell the egg situation to determine whether it is spoiled.
If cooked eggs are stored at too high a temperature or overnight for a longer period of time, they are more likely to deteriorate, and then consumed again may cause bacterial food infections, leading to vomiting, abdominal pain, diarrhea and other symptoms, so it is not recommended to consume spoiled overnight cooked eggs.
However, it should be noted that even if you can eat, it is not recommended to consume overnight cooked eggs for a long time, as far as possible to consume freshly boiled eggs.