Although many doctors and nutritionists recommend that a human being should drink an average of 2 liters of water a day, which is about eight glasses, probably not recommendedtaking into account that the food we eat also contains water.
And an investigation has come to destroy this recommendation of having to drink 2 liters of Water on average every day, and it is that basically even half would be more than enough depending on the food we eat.
The researchers estimate that we would only need about 1.3 to 1.8 l of water per day, taking into account that half of our daily water intake comes from food. So it’s not just about drinking water.
Now scientists from around the world have collaborated on new research. To do this, they surveyed 5604 people with ages ranging from eight days to 96 years, and from 23 different countries about drinking water in a concrete way.
Participants drank a measured amount of water that had been spiked with deuterium, which is found naturally in the human body and is harmless.
After that they observed the speed at which the deuterium disappeared from the body, which revealed the rate of renewal of water in the body.
The study published in the journal Science, via Dailymail, revealed that people who live in hot, humid environments, at high altitudes, as well as athletes or pregnant women, needed more water.
Less than those 2 liters of water per day
They also clarify that the body water ratio is not equal to the drinking water requirement: “even if a man in his 20s has a water turnover of an average of 4.2 l per day, it does not mean that he needs to drink 4.2 l of water per day”, says the teacher john speakman from the University of Aberdeen.
“About 15% of this value reflects the exchange of surface water and water produced by metabolism. The actual required water intake is around 3.6 l per day. Since most foods also contain water, a substantial amount of water is provided just by eating”, he points out.
“This study shows that the common suggestion that we should all drink eight glasses of water is probably too high for most people on most occasions.“, Add.
Calculations suggest that a typical middle-aged man she might need to drink between 1.6 and 1.8 l per day, and a woman of the same age between 1.3 and 1.4 l per day. On the other hand, for people aged 80 and over, it could be worth drinking around 1.1 l per day.
They clarify that this depends a lot on the type of food that is eaten: if you eat a lot of soup, you would need to drink less.
They also point out that drinking tea, coffee, soft drinks and juices also count towards the total daily fluids bodilybut these drinks contain other things that may not be entirely healthy.