1, how much is appropriate to drink every day?
Drinking "eight glasses of water" every day is too general. After all, cups come in different sizes.
According to the dietary guidelines of the Nutrition Society of China, women are advised to drink 1500ml every day, while men are advised to drink more than 1700ml every day. Of course, this can be increased or decreased according to the actual situation.
2. Drinking plenty of water in a short time may lead to "water poisoning";
Recently, it was reported in the news that Ms. Lin in Shenzhen drank 3000 ml of water on an empty stomach in order to hold back her urine and do B-ultrasound. At noon, Ms. Lin began to feel sick and vomiting, and her hands and feet twitched. The family thought that Ms. Lin had low blood sugar and gave her a cup of sugar water. But instead of getting better, Ms. Lin began to be confused. Her family rushed her to the hospital and was finally diagnosed as "water poisoning".
The so-called "water poisoning" refers to excessive water intake, which can not be excreted from the kidneys in time and remains in the body, resulting in a decrease in plasma osmotic pressure and an increase in circulating blood volume, followed by gastrointestinal symptoms such as nausea and vomiting, and some even have difficulty breathing, shortness of breath, brain edema and even life-threatening.
But it is rare in clinic. Under normal circumstances, people don't drink 2-3L of water at a time, so don't worry too much.
3. After boiling, leave the water overnight. If it is properly preserved, it can be drunk, and the water that has been boiled many times can also be drunk.
There have been rumors that water can't be drunk overnight, but some netizens have raised a question: the water cooked in the morning can be drunk at night, but the water cooked at night can't be drunk the next morning?
Studies have shown that the longer the boiling water is left, the higher the nitrite content will be, but the nitrite content in the water left overnight is far lower than the standard of GB 5749-20061mg/L.
Research data
national standard
Therefore, according to the results of this study, unpolluted boiled water can be drunk overnight.
The study of repeatedly boiled water shows that the content of nitrite will increase with the increase of boiling times, but the increased amount is still lower than the national drinking water standard, so it is also drinkable.
Of course, according to these studies, the content of nitrite will increase, so try not to drink overnight water or boil boiled water repeatedly.
4, drinking water can not relieve spicy, but drinking iced milk and soy milk can alleviate.
Spicy substances are mainly capsaicin, which is insoluble in water, but can be taken away by casein in milk, and cream can also dissolve a small amount of capsaicin. As for ice, it is to make your mouth more comfortable.
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