2024 Author: Jasmine Walkman | [email protected]. Last modified: 2023-12-16 08:29
How often do we forget that the kettle has been boiling for a long time and the water in it has cooled down because we can't get away from our favorite show or series? We turn it on again and again boil the water in the jug.
Do you know what happens when we boil water for the second time?
This is important knowledge for each of us, but it is not taught in school. When the water boils, its composition changes, which is completely normal: the volatile components turn into steam and evaporate. In this way, boiled water is safe to drink.
What happens when the water boils again?
But when the water boils again, its composition changes - worsens. In this case, harmful components begin to form in the water.
These components may include arsenic, nitrates, fluoride. Also, after boiling again, useful minerals can be harmful. For example, calcium salts can cause kidney stones and gallstones.
The devastating effects of repeated boiling of water
1. Arsenic
According to the WHO, the biggest harm from drinking water is related to arsenic. Arsenic in water, may cause toxicity. And yet - arsenic can slowly but surely accumulate in the body and cause irreversible physical effects. Potential risks of arsenic include peripheral neuropathy, gastrointestinal disorders, skin lesions, diabetes, kidney problems, cardiovascular disease and even cancer.
2. Nitrates
Nitrates are found everywhere, including in soil, water and air. But they take a dangerous form if ingested in large quantities and under the influence of heat treatment. High temperatures convert nitrate to nitrosaminewhich is a carcinogen. Nitrates can cause leukemia, colon cancer, problems with the bladder, ovaries, stomach, pancreas and risk of esophageal cancer.
3. Fluorine
Fluoride is a very controversial substance. But most scientists still believe it could pose a health threat. When you boil water, some of the fluorine compounds are converted to fluoride.
Harvard University has collected data from 27 studies conducted on this topic in the last 22 years. The conclusion is that fluoride has a negative neurological effect on children and can even slow down the intellectual development of the baby! The results of the study are published in the journal Environment Health Science. It is clear from them: fluoride reduces the IQ of children. It is also dangerous for women because it leads to infertility.
See if fluoride in mineral water is dangerous and what we need to know about fluoride in toothpastes?
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