Around 23% of your bones, 70% of your body, 77% of your brain and 92% of your blood is water. These anatomical-physiological statistics alone show that it's impossible to be healthy without it, don't you agree? And there's a lot of material available on water.
But the “official consensus” (in Brazil) says that human beings should drink “at least” 2 liters of water a day, when I'm convinced that the recommendation should be “at least 3 (three) liters a day, well distributed throughout the day (and quality water)”. Read on to find out why.
Not least because, with regard to “consensus” in general, when one of them says something about health, it is assumed that “authorities” in that area met at a certain time and evaluated everything that was available and “scientifically valid”, and then came up with an “official” position on the subject. The problem is that until this “official opinion” is disseminated, explained, taught, accepted, implemented, put in books and even printed, this process can take years. As a result, a “consensus” is often already out of date when it finally becomes public. And that's when it doesn't possibly reflect “hidden” interests...
But back to the subject of water, do you know why, in my opinion, always scientifically based on health, the minimum should be 3 liters of water a day, divided into about 1 liter in the morning, 1.5 liters in the afternoon and 0.5 liters in the evening (and never going more than 2 hours without drinking water, but avoiding more than 150 ml of liquids with meals)?
✅ Saying that 2 liters a day “is enough” means that you also consume at least 5 portions of fruit or vegetables (or other sources of “water in food”) every day. Here's a question: do most people you know eat like this? In addition, 2 liters is adequate for those at sea level, i.e. at low altitudes, exposed to a mild climate, with light to moderate daily physical activity and without excess body fat mass. However, the majority of the Brazilian population lives in very different conditions!
Abuse of certain substances requires even more water per day, due to the dehydration (absolute or relative) they cause. Examples include coffee, some teas, soft drinks, alcoholic beverages, excessively salty foods or those with a high sodium content “built in” to their composition.
✅ When you suggest 3 liters, you are already considering that most will “improve” even if they reach 20% less than recommended, which is already a gain for many.
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