Who said we should drink 8 glasses of water a day? Scientific study shows
The recommendation seems to be to drink 8 cups of water water About two liters a day isn’t quite right, at least it’s more than many people can afford on a daily basis.
According to a new study, many people only need 1.5 to 1.8 liters a day, less than the two liters normally recommended.
“Not scientifically proven”
“The current recommendation[d. h. das Trinken von 8 Tassen]is not scientifically proven at all,” said Yosuke Yamada of the National Institute of Biomedical Innovation, Health and Nutrition in Japan and one of the study’s first authors, adding that “most scientists are not sure where this recommendation comes from.”
One of the problems, according to the British newspaper, is that previous estimates of human needs according to water It ignores that our food contains water, which can make up a large percentage of our total intake.
As Yamada explained, “If you only eat bread and eggs, you don’t get much water from the diet. But when you eat meat, vegetables, fish, pasta, and rice, you can meet about 50 percent of your body’s water needs. “
Hot and humid climate
In addition, the study, published in the journal Science, evaluated the water intake of 5,604 people aged between 8 days and 96 years from 23 countries.
However, the study found that those living in hot and humid climates and at high altitudes, as well as athletes and pregnant and lactating women need to drink more water.
I also noticed that men between the ages of 20 and 35 had an average water “cycle” of 4.2 liters per day. This decreased with age to an average of 2.5 liters per day in men around 90, which of course depends on the body’s energy expenditure.
In women between the ages of 20 and 40, the “circulation” of water in the body was 3.3 liters and decreased to 2.5 liters by the age of 90.
Professor John Speakman from the University of Aberdeen, a co-author of the study, said: “This study shows that the general recommendation of drinking 8 glasses of water – or about two liters a day – is probably too high for most people .”
While there’s no apparent harm from drinking larger amounts of water, the British newspaper says that finding safe drinking water these days can be expensive.
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