2. Effects of drinking soft water and hard water on health
As long as it meets the national drinking water safety standards, there is not much difference between soft water and hard water in health. Hard water has higher mineral content. It doesn't matter if you eat more vegetables and drink less minerals in soft water in the south. If you have less mineral sources, drinking water is still an important mineral source. There is no absolute standard for the two, and each has its own advantages and disadvantages.
If a person often suffers from calcium stones (kidney or gallbladder), drinking water with high hardness will definitely have adverse effects. But for most normal people, the difference between hard water and soft water is not very big. The minerals with the largest content in hard water are calcium and magnesium, which are very nutritious for people. There is not enough scientific evidence to prove that hard water is directly related to lithiasis. Some people drink spring water or well water all the year round.
In terms of safety, glass containers are the safest first, followed by porcelain. The quality of plastic and pottery products is very different, and some of them are inferior. Long-term use will have adverse effects on people's health. Try to use disposable paper cups to hold hot water or other hot drinks as little as possible. Some disposable paper cups with poor quality will dissolve some unhealthy substances when filled with hot water.
4. Can soda, juice or milk replace drinking water?
Liquid foods with high water content, such as soda, fruit juice drinks or milk, can quench thirst and supplement the water needed by human body, but they should not be used to replace drinking water for a long time, otherwise it will lead to various health damage problems, such as tooth damage and diabetes caused by excessive sugar intake. People who drink too many drinks will also consume more additives than ordinary people, such as pigments and preservatives.
In one case, water is boiled, cooled, heated and then boiled. Cook it once or twice and there will be no safety problems. But sometimes the automatic heating kettle (water dispenser) will automatically reheat as long as the temperature is low enough. If the water in the water heater is repeatedly heated for more than ten hours or several days (some people call it boiling water) without replacement, this water may contain high health hazards, such as heating elements.
6. How much water do you need every day
According to a research report published more than 60 years ago, there was a popular saying that everyone needed about 2 liters of water every day. Some people misunderstand the research results as that everyone should drink 2 liters of water a day, which is a wrong view. The human water demand mentioned in that research report includes all the water ingested together with other foods. In people's daily diet, in addition to drinking water directly, you will also consume a lot of water with other foods. For example, the water content of many kinds of fruits and vegetables is above 90%. Drinking a bag of 250ml pure milk will consume about 230ml water, and eating 2 10g fresh cucumber will also consume 200ml water. Moreover, the water demand of different people varies greatly, which mainly depends on many comprehensive factors such as his diet composition, environmental temperature, humidity, personal physical consumption and sweating. Therefore,
In real life, the harm of drinking water to people's health is more from other harmful components in water, not just the problem of more water and less water.