Teach you 7 tips to drink healthy water

　　1. Boil water yourself

　　It is convenient and economical to boil your own water for drinking, but the only drawback is that the boiled water always has a smell and you have to "fight" with scale for a long time. How can we win this battle? Every time the water is boiled, it will contribute to the scale on the bottom and walls of the pot. When it is poured into a cup, there will be a layer of white foam floating on it, and it will also taste "strange" when you drink it, especially in the north. In fact, this is caused by too much calcium and magnesium ions in the water. This kind of water has a high mineral content and is vividly called "hard water".

　　Jiang Weibo, a professor at the School of Food Science and Nutritional Engineering at China Agricultural University, pointed out that the main components of scale are carbonates and magnesium salts, which are not harmful to the human body. But if there is a lot of scale in the kettle, it will easily absorb harmful substances in the water, so it is best to remove it regularly. It is more effective to use physical methods to remove scale. That is, boil the kettle dry first. When you see that the scale is dry and white, quickly pour in cold water. Due to the principle of thermal expansion and contraction, a large amount of scale will fall off.

　　If you want the boiled water to taste better and be of safer quality, do not boil the tap water immediately after taking it out, let it sit for a while first. Open the lid when the water is about to boil. Wait two or three minutes after the water boils before turning off the heat. This will allow harmful substances in the water to evaporate effectively.

　　2. Bottled water

　　Bottled water appears more and more in people's lives. When using it, you need to pay attention to the following three points.

　　(1) Purified water with boiled water

　　The most common bottled water is purified water and mineral water. Although the impurities and contaminants in purified water have been removed, this water cannot be drunk for a long time. Because when the water is purified, minerals and trace elements that are beneficial to the human body are also removed from the water, which is especially not suitable for the elderly and children to drink. Studies have shown that 30% of the calcium requirements of children and the elderly come from water. If they drink pure water for a long time, the absorption of this part of calcium will not be enough, and the existing minerals in the body will be excreted out of the body with the metabolism of pure water. The best way is to drink pure water with boiled water or mineral water, which can meet the body's demand for minerals.

　　(2) Drink it within a week

　　The principle of dispensing bottled water is to draw water through air pressure. For every liter of water released, a corresponding liter of air must enter the body carrying bacteria and dust. Every time you change the water, some water will remain in the outlet tank, which will also produce a large number of microorganisms. Therefore, for safety reasons, it is best to drink bottled water within a week. If there are few people at home, use a smaller bucket.

　　(3) It’s best to drink it hot

　　Due to the uneven quality of bottled water nowadays, the cleaning and disinfection of buckets is not strict, making the originally safe water unsafe. Therefore, it is best to boil bottled water before drinking it, and choose big brands when purchasing.

　　3. Natural water is good water

　　Natural water has strict requirements for water sources. It must be surface water, spring water, and mineral water that meet international standards. The water intake area must have a quiet environment and be free of any industrial pollution. For example, the Nicolet natural water in the United States originates from Nicolet National Forest Park in Wisconsin, the internationally renowned Evian natural water originates from mountain springs in the Alps, and the domestically renowned Nongfu Spring natural water originates from Qiandao Lake, a national first-level water body, and national precious water sources such as Changbai Mountain Jingyu Mineral Water Reserve.

　　The raw water of natural water also requires a stable PH value (weak alkaline), water temperature and a certain amount of mineral elements that are beneficial to the human body. In addition, high-tech production equipment is also a necessary condition to ensure that natural water is protected from secondary pollution during processing. For example, at Nongfu Spring, from the time raw water enters the water treatment workshop to the completion of product packaging, the entire production process is automatically monitored by computers, and there is no chance of touching the product with hands.

　　In short, containing certain mineral elements and having a weakly alkaline pH (>7.0) are the primary criteria for good water. These indicators are marked on the labels of bottled water.