Never Reheat These 7 Foods

Many foods release toxins when reheated. They're better used in salads or cold dishes to avoid health risks.
Never Reheat

In your home, you’re more likely to follow the rule of not letting food go to waste. Every day tons of food are thrown away while in other parts of the world, people are starving and not getting enough nutrition.

It’s always advised to keep food in the refrigerator and reheat it a day or two later so that it doesn’t end up in the trash.

However, many people aren’t aware that there are some foods that you should never reheat because they can cause health problems. Do you know which foods they are?

Never reheat the following foods


Chicken is one of the most commonly refrigerated foods because it keeps well and retains its flavor after being reheated. However, chicken should be eaten freshly cooked or cold.

Even though you might not be able to tell, reheating chicken changes its protein composition which can lead to problems with digestion. If it’s not eaten right after preparation, it can be reheated, but only at a low temperatures.

Want to know more? Read: Is It Safe to Drink Water from Plastic Bottles?



There are so many different ways to prepare them and reheating them sounds like a good idea. However, they’re best eaten freshly prepared when they still have all their beneficial properties and health benefits.

If you have a few leftover, it’s better to eat them cold. Mushrooms also undergo changes in composition when reheated and can cause stomach pains and bloating.


Potatoes are full of nutrients and although they can be kept in the refrigerator for a few days, you should never reheat them. Reheating changes their flavor, alters their properties and can even make them toxic.

The best thing to do with leftover potatoes is use them in purees or cold salads.



This green vegetable is recommended for your diet, but you shouldn’t reheat this food because it contains a high percentage of nitrates, which when subjected to high temperatures are converted into nitrites. Nitrites are not healthy and can have serious effects on your health. You should always eat spinach fresh.


Beets also contain nitrates which turn into harmful nitrites when reheated. This is another food that you should avoid reheating if you don’t want health problems. In fact, in order to enjoy the maximum benefits of beets, they should be eaten in salads or smoothies.



If your soup contains celery, avoid reheating it to prevent damage to your body. As with the foods above, celery contains nitrates that convert into nitrites when reheated.

This means it can turn into a potentially carcinogenic food when it’s reheated. Therefore, you should try to pick the celery out of your soup before you reheat it.


Eggs aren’t usually reheated because it changes their aroma and flavor. But just in case, it’s important to know that reheating eggs can be damaging to your health as the compounds they contain can become toxic when subjected to high temperatures.

Don’t forget to read: 12 Worst Toxins in Processed Food

How can I safely reheat food?

Woman reheating foods

Although the above mentioned foods should never be reheated, this doesn’t mean that you can’t reheat other leftovers.

In order to safely reheat foods, keep these following tips in mind:

  • Reheating should be done quickly to bring the temperature up to 150° F in the center of the food.
  • Reheat only the amount that you’re going to eat.
  • Cooked foods should not come into contact with raw foods to avoid cross contamination.
  • Remember that all ingredients are different and may not reheat the same. When reheating more than one type of food, cover them so that they’ll warm evenly.
  • If you don’t think you’ll be able to eat the food within 4 days, it’s better to freeze it.