Harvard researchers: how much water people need to drink per day
Drinking water is water that is intended for daily unlimited and safe consumption by humans and other living things. The main difference from table and mineral waters is the reduced salt content (dry residue), as well as the existence of existing standards for the overall composition and properties (SanPiN 188.8.131.524-01 - for centralized water supply systems and SanPiN 184.108.40.2066-02 - for waters packaged in the tank).
The water of many freshwater sources is unsuitable for drinking by people, as it can serve as a source of spreading diseases or cause long-term health problems if it does not meet certain water quality standards.
Water that does not harm human health and meets the requirements of current quality standards is called drinking water. If necessary, the water meets sanitary and epidemiological standards, it is cleaned or, officially speaking, “prepared” with the help of water treatment plants.
It is noted that earlier there were theories in the media that a person should drink at least two liters of water a day, not counting other liquids.
However, it turned out that this is just a myth, and a person can actually drink less, it depends on the conditions in which he is. Under normal lifestyle conditions, it is enough to drink 4-6 glasses of water to maintain water-salt balance.
Scientists note that the amount of fluid consumed may increase in the summer, as well as during training. In general, they note that these are individual data that will differ even on different days from one person.
A daily intake of 1-2 liters of water is necessary for the normal physiological activity of the human body, depending on the surrounding weather conditions and diet (especially salt intake). The absolute minimum over a long period is about 1.6 liters (600 ml per urine, 200 ml for fecal losses and 800 ml for losses through the skin and lungs). This includes the water contained in the food (that is, survival does not require drinking 1-2 liters of water per day, although it is often recommended for health benefits).
The sensation caused by the dehydration of the body is called thirst. Thirst is a feeling of dryness on the back of the tongue and a strong desire to drink. Thirst is regulated by the hypothalamus in response to weak changes in the electrolytic level of the body as a result of changes in the volume of circulating blood.
In summer, any fruit juice is useful. Apple juice breaks down fats, it is also useful for people suffering from gastrointestinal diseases. Also contains a lot of nutrients and tomato juice. Juice is also good for children. Nectar is a drink consisting of one or more juices.
Via eizvestia.com & wiki & wikihow