The following dishes are not too strange in the daily meals of families.However, if these dishes overnight, it is easy to produce toxins that are harmful to health, even cancer if used for a long time.

1. Green leafy vegetables

Green leafy vegetables provide many health benefits, including fiber, enhance vision, help healthy bones, regulate blood pressure, support weight loss, good for skin and digest, prevent cardiovascular disease, ..

However, the speed of loss of nutrients of vegetables to overnight is relatively fast, even nutrients almost lost all after only one night.Moreover, if not properly stored, green leafy vegetables are very easy to spend and create conditions for bacteria to multiply, endangering the digestive tract when eating the next day.

In particular, green leafy vegetables are easy to produce nitrite with high concentrations.The absorption of too much nitrite in a short time can cause acute poisoning, affecting the function of red blood cells and prevent blood from transporting oxygen properly to the body's organs.

In cases of mild nitri poisoning, the patient may be dizzy, physical weakness, chest tightness, shortness of breath, nausea and vomiting, abdominal pain, diarrhea, lips and fingertips to turn to turnPurple blue.Serious nitrite poisoning can lead to deficiency of oxygen on old age and even death.

In addition to poisoning, when nitrite enters the acidic environment of the stomach will react with the protein you absorb during the meal, this combination accidentally produces nitrosamine causing cancer.When consuming a large amount in a long time can cause cell mutations and even cause many different types of cancer such as stomach cancer, esophageal cancer, liver cancer and colon cancer.

The oral nitrite dose has the lowest toxicity for adults about 300mg - 500mg, if swallowed 1-3gam can be fatal.Typically, the nitrite content of vegetables overnight (excluding salted vegetables and processed meat) stored in the refrigerator cooler for 24 hours will not exceed 10mg/kg.Therefore, the content of nitrite in the dishes overnight, although it is still inferior to acute poisoning, but if eaten regularly, it is another story.

Advice:Processed vegetables can only be safe for 3 hours, it is best to eat green vegetables up to 2-3 hours after cooking.When excess vegetables are best, you should leave, do not overnight or reheat even after being stored in the refrigerator.

2. Seafood

Seafood with high nutritional value includes high protein, omega-3, vitamins and minerals necessary for the overall health, good for bones and joints, enhance cardiovascular health, good for vision, enhance mind, mental strength,Reduce depression, ...

However, if seafood food is overnight in the refrigerator, they will no longer retain those nutrients but turn into toxic substances, affecting the liver and kidneys.Because seafood contains very high protein content, it will attract bacteria to eat rotten corpses and produce non -beneficial pathogens.

Therefore, when processing, just enough processing to avoid eating leftovers and throw away, very wasteful.

3. Salad

Fruit salads and vegetables (not suitable for warming) when the room temperature is more than 4 hours, it is easy to produce harmful bacteria for health and other digestive problems.This means that the salad for the refrigerator overnight is not safe to eat the next day, even when stored in the refrigerator.

Moreover, overnight salad also loses the freshness and nutritional value of vegetables in it.

In addition to the three dishes mentioned above, fried eggs, boiled eggs, mushrooms and stewed soups in metal pots such as aluminum and stainless steel are also not suitable for overnight and eat the next day because it is also easy to produce harmful toxins that cause harmfor health.

Source: sohu