Drinking water has its pitfalls？Reveal 6 Myths You've overlooked!

Drinking water knowledge

6 cognitive misunderstandings

Myth 1

The more water you drink, the better?

Truth: No

While "drinking more water" is good for your health, more is not always better。

When the intake of water exceeds the capacity of the kidneys to discharge, it can lead to a decrease in the concentration of body fluids and plasma sodium ions.Blood dilution, plasma protein total, hemoglobin, red cell volume decreased;The volume of intracellular and external fluid increases, leading to water poisoning。

So, how much water is right to drink?

According to the recommendations of the Dietary Guidelines for Chinese Residents, in mild climates, men and women with light physical activity levels need to drink enough water (1700 ml and 1500 ml) per day, respectively, such as pure water, boiled water, bottled water, packaged drinking water, natural mineral water and so on。If the temperature is high or a lot of physical activity, you need to increase the amount of water。

02Myth 2

"Yin water" can not drink?

Truth: Don't worry

The so-called "Yin water" is actually a mixture of hot and cold water。

This situation is very common in life, for example, just boiled water is too hot to drink immediately, we usually add some cold water to reduce the temperature, which is completely normal operation。

This "Yin water" is completely drinkable, as long as the mixed water is already boiled, or meets hygiene standards, it will not cause diarrhea。

But if it is raw water can be hard to say, because raw water has not been treated with high temperature, may contain pathogenic bacteria or parasites, it is not recommended to drink, drink it really can have diarrhea。

03Myth 3

Water from the water fountain is safe?

Truth: It could be dirty

It is better to drink the bottled water within 7 days after opening the lid。

Studies have confirmed that the bacterial content of bottled water after opening will increase with time, so it is recommended to drink it within 7 days。

The pollution of the inner wall of the water dispenser and the cold water valve is the main reason for the excessive microbial content of the water outlet, and many people will ignore the cleaning of the smart seat in the water dispenser, and the smart seat is also easy to breed bacteria。

Friends who use water dispensers at home must pay attention to disinfect the water dispenser at ordinary times, and it is generally recommended to disinfect once every half a month to 1 month。Water dispenser components such as the inner tank and cold water valve should be cleaned once every seven days。

04Myth 4

Drinking hard water is easy to get stones?

Truth: Don't worry

If you want to prevent stones, drink more water。

The so-called hard water refers to the total concentration of calcium and magnesium in the water is relatively high, the higher the content of the water is harder。The mineral content of calcium and magnesium in the water is high, and scale will be formed on the bottom and wall of the kettle when the water is boiled。

Drinking such water often does not mean getting stones。If you want to prevent stones, you also need to drink more water, studies have shown that increasing the amount of water and urine can reduce the risk of kidney and urinary system stones。

05Myth 5

Drinking water can make people fat?

Truth: How is that possible

Water has no calories and won't put on weight。

长胖的原因是因为全天摄入的热量>消耗的热量，导致脂肪积累，逐渐变的“圆润”。And water has no heat, whether it is hot, cold, warm water, their heat is 0。So, no matter how much water you drink, you won't gain weight unless you drink sugar water.。

06Myth 6

A thousand boiling water causes cancer?

Truth: No

In our lives, we often need to heat water repeatedly。

For example, a pot of water becomes cool after boiling, and if you want to drink hot water, you need to plug it in again to heat it, sometimes even need to boil it three or four times。

So some people worry that the repeatedly boiled water will not exceed the nitrite and cause cancer?

Some people have done a related experiment: after repeated boiling of tap water for 8 times, the nitrite content is only 3.38 mu g/L。The nitrite content of drinking water quality stipulated in the "GB5749-2006 drinking water sanitation standard" is less than 1000μg/L, so there is no need to worry about cancer。

As long as the tap water itself is qualified, it can be safely drunk by boiling it several times。