5 foods you should never reheat or keep overnight

The fast-paced living that modern life imposes on more and more people has made meal-prep a thing for many. The reason why is because preparing your meals in advance and them use them in the days to come saves time. However, what many aren’t aware of is that not every food can be reheated or kept overnight because they can develop harmful bacteria or release toxic compounds that put your health at risk.

Below are 5 foods you should never reheat or keep overnight no matter how tempted you are to consume them the following day.

1. Leafy Greens (Spinach, Celery, Lettuce)

You are likely well-aware that leafy greens are healthy additions to your diet. However, keep in mind that they should never be reheated. If you wonder why, here’s why. Leafy greens are rich in nitrates that can convert to nitrites and nitrosamines when exposed to high heat, compounds linked to cancer and other health issues.

If you still want to eat your leftover leafy greens, just have them cold.

2. Rice

Reheating rice might seem harmless, but it can actually pose a serious health risk if not handled properly. Cooked rice can contain spores of Bacillus cereus, a bacterium that survives cooking. When rice is left at room temperature, these spores multiply and produce toxins reheating won’t destroy that cause nausea, vomiting, and diarrhea. Just to be safe, always cool rice quickly (within an hour), store it in the fridge, and reheat only once until steaming hot. Ideally, eat it within 24 hours or turn it into fried rice right away.

3. Eggs

Who doesn’t love eggs? They are easy to cook and are a great source of protein. However, when reheated they can release sulfur compounds, which may lead to stomach upset or worse. Also, if left out too long, eggs are prone to contamination by bacteria like Salmonella.

4. Mushrooms

Mushrooms are highly sensitive to temperature changes. Reheating them can lead to the breakdown of their proteins, producing compounds that may upset your stomach or cause food poisoning. In addition to that, improper storage increases the risk of bacterial growth.

5. Seafood

Seafood tends to spoil quickly, so reheating it isn’t a good idea. Even when it looks and smells fine, it may contain bacteria or toxins that cause food poisoning, such as scombroid or ciguatera poisoning. These toxins can’t be destroyed by reheating. The proteins in fish also break down fast, making it easier for bacteria to grow. To stay safe, always store cooked seafood in the fridge right away and eat it cold within 24 hours.