Rumors: Many people think that scale is a harmful substance in water. Drinking water should drink pure water. But in fact, this is a big mistake. Water with scale is good water, indicating that the water is hard, contains mineral nutrients, and is alkali. Sexual water. If there is no scale, it means that it is acidic pure water, which is the "bone-scraping water" that will take away the bone calcium and blood calcium of the human body.
Truth: Scale is generally harmless to the human body, and the evidence for the benefits of drinking hard water is insufficient. The acidic constitution is a "pseudo-concept". No matter whether it is acidic water or alkaline water, it will not change the pH value of the human body. Real acidosis and alkalosis are serious diseases that must be treated professionally.
What is scale? Is it harmful to the human body?
The soluble calcium and magnesium salts in the water become insoluble calcium and magnesium salts when heated, which is scale. The water containing scale is called "hard water" and is generally harmless to the human body. To say the harmful aspects of scale, it may also mean the damage to water circulation equipment and boilers. It is said that there is no scientific basis for the stone caused by drinking hard water.
Does WHO have a recommended value for water hardness (TDS)?
For “hard waterâ€, WHO believes that excessive “hardness†does not lead to consumer acceptance, but the main reasons are taste, taste and appearance, not health.
WHO has indeed considered the “Nutrition in Drinking Water†paper to focus on mineral nutrient recommendations, but in general, although some people say that hard water is good and soft water is not good, the evidence is not enough, so they will not accept the letter and continue. Study to see the aftereffects. For this reason, the WHO Guidelines for Drinking Water do not give health guidance values ​​for water hardness (TDS), neither an upper limit nor a lower limit. The old driver suggested that according to the difference of raw water in each area, the general TDS value below 20 is the most suitable for human body drinking!
Is weak alkaline water good for health?
It is generally said that the promotion of weak alkaline water is beneficial to neutralize acidic physique and to get rid of the disease crisis.
In fact, "acidic constitution" is a "pseudo-concept". The pH of human blood only fluctuates within a small range. The blood contains several buffer systems such as bicarbonate, phosphate, plasma protein, hemoglobin and oxyhemoglobin. These compounds ensure that in the dynamic balance of the release of substances into the blood and the exclusion of blood, as long as they do not exceed these compounds. The buffering capacity, the pH of the blood will always fluctuate within a very small range. Under normal circumstances, the pH of the blood will remain between 7.35 and 7.45. Alkaline water cannot change the pH of normal human blood.
Pure water refers to water purified by filtration, heating, distillation, etc., without additives, can be directly consumed. The filtered water subjected to reverse osmosis treatment contains a small amount of trace elements required by the human body, and the distilled water subjected to high temperature treatment is substantially no longer contained. Pure water does not contain any trace elements, but after treatment, the essential mineral elements such as calcium, magnesium, potassium and sodium are significantly reduced.
Therefore, even pure water without scale is not acidic water, and even if you drink acidic water, it will not directly make the blood sour.
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