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纯净水不能长期喝？千滚水致癌？5个喝水的真相你要知道！
又是一年冬至，大街小巷都在讨论吃饺子还是吃汤圆，然而科普君要告诉你，最近要多喝热水！（佛系冬至，多喝热水）
It is also a year's winter solstice. All the streets and alleys are talking about eating dumplings or eating dumplings. However, he wants to tell you how to drink hot water recently! (the Buddha is the winter solstice, drinking hot water)
毕竟最近空气挺干的！
After all, the air has been dry lately!
关于「喝水」，看似像生活一样平淡，其实戏还是很多的。比如各种喝水的传说源源不绝，千滚水、隔夜茶、柠檬水、阴阳水、等被大家传的神乎其神。今天科普君就来一次缕缕清楚，到底怎么喝水？
As for "drinking water", it seems as dull as life, but the play is still a lot. For example, the legend of various drinking endless, thousands of boiling water, tea, lemonade, and overnight water and so on by everybody the miraculous. Today, the king of KP will have a clear view of how to drink water in the end.
1、纯净水缺乏矿物质不能长期喝？
1, pure water lack of minerals can not drink for a long time?
「纯净水缺乏微量元素，长期会导致缺乏营养，损害健康。」这样的言论，在朋友圈和不少水产品广告中都出现过。没错，纯净水中几乎没有矿物质，但是也别让喝水太有使命感。
"Pure water lacks trace elements, which will lead to lack of nutrition and damage to health for a long time. "This kind of statement, in the circle of friends and a lot of aquatic product ads have appeared. Yes, there is almost no mineral in the pure water, but don't let the water drink too much.
真相：纯净水的确缺乏矿物质，但我们根本不是靠喝水补充矿物质的！
Truth: pure water does not have minerals, but we don't rely on water to add minerals at all!
喝水，只是为了满足身体对于水的需要，我们吃的一日三餐，才是获取营养素的主要途径。
Drinking water, just to meet the needs of the body for water, we eat three meals a day, is the main way to get nutrients.
喝水只是为了补充水分，首先考虑安全和卫生。只要安全有保障，矿泉水和白开水都没问题，哪个方（便）便（宜）选哪个。
Drinking water is just to add water, first of all, safety and hygiene. As long as the safety is guaranteed, the mineral water and the boiled water are no problem, which party (should) choose which.
2、千滚水有亚硝酸盐，不能喝？
2, thousands of boiling water with nitrite, can not drink?
所谓的「千滚水」，就是反复烧开的水。千滚水「亚硝酸盐超标」「致癌」「造成身体缺氧」纯属谣言！
The so-called "thousands of boiling water, boiling water is repeatedly. "Thousands of boiling water" and "cancer" and "exceed the standard of nitrite caused by hypoxia" rumor body!
真相：反复烧开的水里，确实有亚硝酸盐，但离致癌还远着呢。
Truth: there is nitrite in the repeated water, but it is far from cancer.
千滚水亚硝酸盐含量到底有多低呢？让我们看看实验室的测定：
The content of nitrite in thousands of boiling water, how low? Let's take a look at the laboratory test:
自来水中的亚硝酸盐含量为 0.007 mg / L；
The content of nitrite in tap water is 0.007 mg / L.
烧开 1 次后，亚硝酸盐为 0.021 mg / L；
After 1 times, the nitrite was 0.021 mg / L.
烧开 20 次后，亚硝酸盐为 0.038 mg / L。
After 20 times, the nitrite was 0.038 mg / L.
说第二次烧开的水不能喝的人，脑补一下家里爸妈煲的老火靓汤！
Second boiling water can not drink, brain parents at home in the old fire soup pot!
和千滚水类似的还有隔夜茶。
There are similar and thousands of boiling water overnight tea.
真相：隔夜茶长时间放置的茶汤里，亚硝酸盐则几乎没有变化，不会对人体产生威胁
The truth: nitrite is almost unchanged in the tea that is placed in a long time of tea, and it does not threaten the human body.
还有人说隔夜茶放久了会产生细菌，真相是然隔夜茶中的茶多酚含量下降，但依然会对细菌产生抑制作用，所以隔夜茶不会产生细菌性中毒现象。
Some people say that overnight tea will produce bacteria for a long time. The truth is that the content of tea polyphenols in overnight tea is decreasing, but it will still inhibit bacteria. So the overnight tea will not cause bacterial poisoning.
甚至更神乎其神的说法是隔夜或长时间放置的茶汤会产生泛着金属光泽的东西，常喝会金属中毒，真相是金属光泽的东西是多酚类物质被氧化的产物，和金属无关。一般情况下，除非违法添加，茶叶的重金属威胁不大。
Even more miraculous is overnight or for a long time the tea will produce glowing metallic stuff, often drink will be metal poisoning, the truth is that metallic stuff is the polyphenols oxidation product, and metal. In general, unless the illegal addition, tea is not a heavy threat to heavy metals.
3、常喝硬水会得结石？
3, often drink hard water will get stones?
日常生活中经常会看到烧水壶用久了会出现水垢，“迷信”的老人家就会让水质背锅了，说家里的水是「硬水」。（水壶中的水垢加点醋泡一下就可以消除）
In daily life, it often appears that the kettle will be dirty for a long time. The superstitious old man will let the water go back to the pot, and say that the water at home is "hard water". (the scale in the kettle can be removed with a little vinegar bubble.)
其实真正的“硬水”是指钙、镁离子含量较高的水。而喝硬水会导致结石，其实完全是个谣传。
In fact, the real "hard water" refers to the water with high content of calcium and magnesium ions. And drinking hard water can cause stones, but it's a rumor.
真相：没有证据能证明硬水会导致结石或其他健康问题。
The truth: there is no evidence that hard water can cause stones or other health problems.
硬水对人体无害，钙和镁都是人体必需的元素，而且多数人的钙镁摄入量都偏低。
Hard water is harmless to the human body, calcium and magnesium are essential elements of human body, and most people are very low intake of calcium and magnesium.
从这个意义上来说，硬度高的水，还能补充一部分矿物质。当然，也远远不够日常所需，补充矿物质的正道，还是均衡的膳食。
In this sense, the water with high hardness can also supplement a part of the mineral. Of course, it is far from the daily need, the mineral supplement, or a balanced diet.
更何况，即使每天喝 2 L 硬水，其中的钙含量也不过 150 mg 左右，还不如一杯牛奶中的钙呢。
What's more, even if you drink 2 L hard water a day, and the calcium content is about 150 mg, it's not as good as calcium in a cup of milk.
不过，硬度高的水确实也有点硬伤——口感不太好。
However, the hardness of the water is also a bit flawed, taste is not very good.
4、喝柠檬水能提高免疫力？
4, drinking lemonade can improve the immunity?
这句话是不是也看着特别像谣言？它确实也是不实之传！
Does this sentence look especially like a rumor? It's true that it's not true!
真相：柠檬水提高免疫力纯属一厢情愿，没有科学依据。
The truth: lemonade is purely wishful to improve immunity and has no scientific basis.
柠檬含有丰富的维生素C，维生素C也的确是人体必需的营养成分。人体内许多过程都需要维生素C参与，但并不能说维生素C摄入越多，就有保健功效。
Lemon is rich in vitamin C, and vitamin C is indeed a necessary nutritional ingredient in the body. Vitamin C is required for many processes in the body, but it can not be said that the more vitamin C intake is, there is a health effect.
5、刚烧开的水不能喝？
5. Can't the fresh water drink?
这个...确实不能喝，太烫了！
This... Really can't drink, it's too hot!
其实完全可以用凉开水混合着开水喝，民间喝水学里流传的「阴阳水」不能喝，其实...
In fact, it can be mixed with boiled water and drinking water, and the "Yin and Yang water" in the folk drinking water science can not drink, in fact...
真相是：完全可以混合热水和放凉后的开水、桶装水、瓶装水，其实就是把不同温度的水混合在一起而已，没什么不好的。
The truth is: it can mix hot water and cool boiled water, bottled water and bottled water, which is actually mixing different temperatures of water. It's nothing bad.
但如果是生水和热水混合，却有可能「病从口入」。生水中可能含有有害微生物，不能直接喝，也不要把这样的生水掺入热水中。
But if it is water and hot water mixing, there may be "Disease enters by the mouth.". May contain harmful microorganisms in the water, can not drink, do not take such water mixed with hot water in.
好了~今天冬至，别忘了多喝热水。
Well, it's winter solstice today. Don't forget to drink hot water.
It is also a year's winter solstice. All the streets and alleys are talking about eating dumplings or eating dumplings. However, he wants to tell you how to drink hot water recently! (the Buddha is the winter solstice, drinking hot water)
毕竟最近空气挺干的！
After all, the air has been dry lately!
关于「喝水」，看似像生活一样平淡，其实戏还是很多的。比如各种喝水的传说源源不绝，千滚水、隔夜茶、柠檬水、阴阳水、等被大家传的神乎其神。今天科普君就来一次缕缕清楚，到底怎么喝水？
As for "drinking water", it seems as dull as life, but the play is still a lot. For example, the legend of various drinking endless, thousands of boiling water, tea, lemonade, and overnight water and so on by everybody the miraculous. Today, the king of KP will have a clear view of how to drink water in the end.
1、纯净水缺乏矿物质不能长期喝？
1, pure water lack of minerals can not drink for a long time?
「纯净水缺乏微量元素，长期会导致缺乏营养，损害健康。」这样的言论，在朋友圈和不少水产品广告中都出现过。没错，纯净水中几乎没有矿物质，但是也别让喝水太有使命感。
"Pure water lacks trace elements, which will lead to lack of nutrition and damage to health for a long time. "This kind of statement, in the circle of friends and a lot of aquatic product ads have appeared. Yes, there is almost no mineral in the pure water, but don't let the water drink too much.
真相：纯净水的确缺乏矿物质，但我们根本不是靠喝水补充矿物质的！
Truth: pure water does not have minerals, but we don't rely on water to add minerals at all!
喝水，只是为了满足身体对于水的需要，我们吃的一日三餐，才是获取营养素的主要途径。
Drinking water, just to meet the needs of the body for water, we eat three meals a day, is the main way to get nutrients.
喝水只是为了补充水分，首先考虑安全和卫生。只要安全有保障，矿泉水和白开水都没问题，哪个方（便）便（宜）选哪个。
Drinking water is just to add water, first of all, safety and hygiene. As long as the safety is guaranteed, the mineral water and the boiled water are no problem, which party (should) choose which.
2、千滚水有亚硝酸盐，不能喝？
2, thousands of boiling water with nitrite, can not drink?
所谓的「千滚水」，就是反复烧开的水。千滚水「亚硝酸盐超标」「致癌」「造成身体缺氧」纯属谣言！
The so-called "thousands of boiling water, boiling water is repeatedly. "Thousands of boiling water" and "cancer" and "exceed the standard of nitrite caused by hypoxia" rumor body!
真相：反复烧开的水里，确实有亚硝酸盐，但离致癌还远着呢。
Truth: there is nitrite in the repeated water, but it is far from cancer.
千滚水亚硝酸盐含量到底有多低呢？让我们看看实验室的测定：
The content of nitrite in thousands of boiling water, how low? Let's take a look at the laboratory test:
自来水中的亚硝酸盐含量为 0.007 mg / L；
The content of nitrite in tap water is 0.007 mg / L.
烧开 1 次后，亚硝酸盐为 0.021 mg / L；
After 1 times, the nitrite was 0.021 mg / L.
烧开 20 次后，亚硝酸盐为 0.038 mg / L。
After 20 times, the nitrite was 0.038 mg / L.
说第二次烧开的水不能喝的人，脑补一下家里爸妈煲的老火靓汤！
Second boiling water can not drink, brain parents at home in the old fire soup pot!
和千滚水类似的还有隔夜茶。
There are similar and thousands of boiling water overnight tea.
真相：隔夜茶长时间放置的茶汤里，亚硝酸盐则几乎没有变化，不会对人体产生威胁
The truth: nitrite is almost unchanged in the tea that is placed in a long time of tea, and it does not threaten the human body.
还有人说隔夜茶放久了会产生细菌，真相是然隔夜茶中的茶多酚含量下降，但依然会对细菌产生抑制作用，所以隔夜茶不会产生细菌性中毒现象。
Some people say that overnight tea will produce bacteria for a long time. The truth is that the content of tea polyphenols in overnight tea is decreasing, but it will still inhibit bacteria. So the overnight tea will not cause bacterial poisoning.
甚至更神乎其神的说法是隔夜或长时间放置的茶汤会产生泛着金属光泽的东西，常喝会金属中毒，真相是金属光泽的东西是多酚类物质被氧化的产物，和金属无关。一般情况下，除非违法添加，茶叶的重金属威胁不大。
Even more miraculous is overnight or for a long time the tea will produce glowing metallic stuff, often drink will be metal poisoning, the truth is that metallic stuff is the polyphenols oxidation product, and metal. In general, unless the illegal addition, tea is not a heavy threat to heavy metals.
3、常喝硬水会得结石？
3, often drink hard water will get stones?
日常生活中经常会看到烧水壶用久了会出现水垢，“迷信”的老人家就会让水质背锅了，说家里的水是「硬水」。（水壶中的水垢加点醋泡一下就可以消除）
In daily life, it often appears that the kettle will be dirty for a long time. The superstitious old man will let the water go back to the pot, and say that the water at home is "hard water". (the scale in the kettle can be removed with a little vinegar bubble.)
其实真正的“硬水”是指钙、镁离子含量较高的水。而喝硬水会导致结石，其实完全是个谣传。
In fact, the real "hard water" refers to the water with high content of calcium and magnesium ions. And drinking hard water can cause stones, but it's a rumor.
真相：没有证据能证明硬水会导致结石或其他健康问题。
The truth: there is no evidence that hard water can cause stones or other health problems.
硬水对人体无害，钙和镁都是人体必需的元素，而且多数人的钙镁摄入量都偏低。
Hard water is harmless to the human body, calcium and magnesium are essential elements of human body, and most people are very low intake of calcium and magnesium.
从这个意义上来说，硬度高的水，还能补充一部分矿物质。当然，也远远不够日常所需，补充矿物质的正道，还是均衡的膳食。
In this sense, the water with high hardness can also supplement a part of the mineral. Of course, it is far from the daily need, the mineral supplement, or a balanced diet.
更何况，即使每天喝 2 L 硬水，其中的钙含量也不过 150 mg 左右，还不如一杯牛奶中的钙呢。
What's more, even if you drink 2 L hard water a day, and the calcium content is about 150 mg, it's not as good as calcium in a cup of milk.
不过，硬度高的水确实也有点硬伤——口感不太好。
However, the hardness of the water is also a bit flawed, taste is not very good.
4、喝柠檬水能提高免疫力？
4, drinking lemonade can improve the immunity?
这句话是不是也看着特别像谣言？它确实也是不实之传！
Does this sentence look especially like a rumor? It's true that it's not true!
真相：柠檬水提高免疫力纯属一厢情愿，没有科学依据。
The truth: lemonade is purely wishful to improve immunity and has no scientific basis.
柠檬含有丰富的维生素C，维生素C也的确是人体必需的营养成分。人体内许多过程都需要维生素C参与，但并不能说维生素C摄入越多，就有保健功效。
Lemon is rich in vitamin C, and vitamin C is indeed a necessary nutritional ingredient in the body. Vitamin C is required for many processes in the body, but it can not be said that the more vitamin C intake is, there is a health effect.
5、刚烧开的水不能喝？
5. Can't the fresh water drink?
这个...确实不能喝，太烫了！
This... Really can't drink, it's too hot!
其实完全可以用凉开水混合着开水喝，民间喝水学里流传的「阴阳水」不能喝，其实...
In fact, it can be mixed with boiled water and drinking water, and the "Yin and Yang water" in the folk drinking water science can not drink, in fact...
真相是：完全可以混合热水和放凉后的开水、桶装水、瓶装水，其实就是把不同温度的水混合在一起而已，没什么不好的。
The truth is: it can mix hot water and cool boiled water, bottled water and bottled water, which is actually mixing different temperatures of water. It's nothing bad.
但如果是生水和热水混合，却有可能「病从口入」。生水中可能含有有害微生物，不能直接喝，也不要把这样的生水掺入热水中。
But if it is water and hot water mixing, there may be "Disease enters by the mouth.". May contain harmful microorganisms in the water, can not drink, do not take such water mixed with hot water in.
好了~今天冬至，别忘了多喝热水。
Well, it's winter solstice today. Don't forget to drink hot water.
