In busy life, saving time and maximum food is the principle of life of many families.Therefore, food warming is also a common habit, which is considered good.However, not all foods can be warmed or warmed many times can produce toxins.

With 4 familiar foods below, it is best to cook enough to eat, not to be redundant.Because if reheated, especially reheating many times, even when properly stored in the refrigerator can harm the liver, destroy the kidneys, destroy the stomach:

1. Eggs

According to the Department of Food and Drug Administration (FDA), the egg yolk has many nutrients, but when continuously affected by high temperatures, it will turn into substances that are harmful to the body.Note, the egg peaches if left for a long time should leave, not regret.

Bacteria like Salmonella can multiply, leading to serious food poisoning.Not to mention in the egg, there may be some strains of bacteria thriving when exposed to temperatures from 45 - 65 degrees Celsius. If they exist in eggs, they repeated many times will increase the amount of bacteria.

In addition to infections, the fat and protein in eggs will be easily denatured.When warming up at high temperatures, continue the protein that decomposes toxins to the stomach and digestive system.Even causing vomiting, acute poisoning in severe cases.

2. Mushrooms

Mushrooms are considered healthy foods but if cooked and left overnight, it will become "poison".Especially, if boiling again and again, the nutrients will disappear and be transformed into toxic substances.

Specifically, the first cooked mushrooms contain good nitrate for red blood cells, but after one night, nitrate will often change to nitrite is not good for the body.Eating large amounts in 1 time can cause digestive disorders, acute poisoning.If you eat for a long time, even if the small amount of stomach, blood vessels, can easily lead to cancer.So it is best to buy just enough to always be fresh, cook and eat only once, not to be redundant.

3. Milk

Milk is a nutritious food, milk contains a large amount of protein, calcium, vitamins and other nutrients, which have many benefits for human health.However, whether or not the question of milk is actually dependent on many factors.

Milk is rich in nutrients but also contains a certain amount of water and protein.These ingredients after heating will change, which can affect the taste and nutrients of the milk.When the milk is at 60 - 62 degrees Celsius starts to have dehydration.When the boiling temperature reaches 100 degrees Celsius, the lactose in milk can be burned and it is easy to cause cancer.The amount of calcium in milk when high temperatures may be precipitated, reducing nutritional value.

You can note the method of preserving and storage time.If the milk has opened the lid and can be infected with bacteria for a long time.If boiling will not destroy all bacteria but can cause bacteria to multiply faster, leading to damage to foods that cause poisoning.

4. The water has been boiled

The habit of drinking boiled water is good, but if you heat it repeatedly, it will become poisonous to the body.It is best to only boil water to 100 degrees Celsius, drink at an appropriate temperature, if cooled, do not reheat or heat only once.

Bacteria can grow in water if the water is not stored properly after heating for the first time or if left for a long time before heating.Drinking such water can cause health problems such as diarrhea, stomach damage.

After the water is heated many times, its chemical properties may change, for example, some minerals can precipitate, making water less nutritious than before and harmful to the liver and kidneys.At the same time increase the concentration of nitrite.This is a substance that is likely to be harmful and if excessive absorption can be harmful to human health, popular as poisoning and cancer.

Source and photo: NetEase Health, Family Doctor