Why you should drink water:
Water is one of the 6 essential nutrients that our body needs.
The 6 nutrients are:
about 70% of our body weight is water.
Ingestion and excretion of water.
We consume water through food, and what we drink. We also get a bit through the skin and lungs. The body even produces a little water through energy production in the cells
The water leaves the body via sweat, urine, and exhalation.
The water’s route through the body.
90% of the water is absorbed in the small intestine and goes into the bloodstream, from there into the extracellular fluid (the fluid surrounding the cells), along with various nutrients, and from the extracellular fluid into the cells, where it replaces the used water. The used water with waste products from the cells is transferred from the cells to the extracellular fluid, and from there back to the bloodstream. From the bloodstream, the water flows on to either the kidneys, lungs or skin. When the water is transferred to the extracellular fluid the blood is ready to absorb more water.
The cells need to have enough water to be able to function optimally. If not, the cells will not function properly, and we get ill.
At rest, the body produces approximately 0,03g sweat per minute and 540g per 24 hours.
During times of heavy activity, the body produces 1 liter or more per hour.
In a sauna, the body produces around 40g sweat per minute, 1200g per ½ hour.
With fever, the body produces 5 to 6 liters per day.
If we have not been taking in enough water to cover what we lose, the body will need more than is available through the small intestine and will have to take water from the intracellular fluid. If that is not enough, the water is taken from the cells. If this happens over a long period, the body will become dehydrated and there will no longer be enough liquid to produce sweat, or only very concentrated sweat. The same applies to the urine.
As there is now less water to transport waste products out of the body, these will begin to accumulate in the body and we will have various symptoms to show that the body is not functioning properly (disease)
Via lungs, we lose about 0.25 ml per minute at rest, and approximately 5 ml per minute when working hard.
Via sweat about 0.5 liters a day when resting
Via urine 1-1.5 liters per day
Acute dehydration is when not enough water is consumed and you lose 10% or more of the bodyweight in fluid loss. When in acute dehydration there is a great risk of dying from dehydration. It is important to ingest water with a little salt, a little at a time. The salt helps the water to remain in the body, instead of running straight through.
Chronic dehydration is when not enough water is consumed to cover fluid loss over a longer period of time.
This can cause the following symptoms:
Lack of energy
Loss of appetite
High blood cholesterol
Increased risk of osteoarthritis