Leftovers Can Harm Your Health. Here Is Why You Should Never Eat Them

Leftovers can be very convenient. You don’t waste good food by throwing it away and you can always use them if you didn’t have time to prepare something else.

Even though most meals are harmless when reheated,
experts claim that there are certain foods that can damage your health if you reheat them.
Eating reheated foods can harm the health.


According to the Center for food safety reheating and improper storing of leftover vegetables can be very harmful and even fatal. These leftovers must be stored at – 40 C or frozen if you need to store them for longer time. Some vegetables like spinach, beets, celery and lettuce contain high amounts of nitrates, so if they are left on room temperature the nitrates accumulate. High amounts of nitrate can cause methemoglobinemia, a rare blood disorder which causes fatigue, seizures and shortness of breath in children.


According to the Food Standard Agency storing the rice leftovers is very important so it won`t damage your health. The uncooked rice has spores of bacteria that are harmful and which can survive after the first cooking. Left on room temperature the spores multiply and eating the rice can cause digestive problems. It`s better to eat the rice at once or freeze it because the spores can survive even the reheating process.


Chicken is high in protein, and reheating changes this composition. You can reheat it if the meat inside is very hot. Also, make sure you eat the meat in two days, and no more.

Vegetable oil

Reheating the meals that are prepared with vegetable oils is very dangerous and it is linked to an increased risk of cancer, stroke and heart disease. The reheating of polyunsaturated oils that contain linoleic acid (corn oil, sunflower oil and canola) releases HNE (4-hydroxy- trans-2-nonenal) which is a toxin from the fatty acids that harm the health. It has been linked to some types of cancer, Huntington’s, Alzheimer’s, liver problems and heart disease.


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