We take 1 to 1.5 liters of water in the morning as we think it is beneficial. Many people think that blood becomes thinner if that much of water is taken in the morning. They also think that if excess water is taken pressure of blood decreases, kidneys will have a problem. With this misunderstanding they desist from taking water and also discourage others. But this is not true. It has been scientifically proved that there is no harm as such by taking more water.
When we take one or two liters of water on empty stomach it is absorbed by the intestines and stomach within minutes. The water so absorbed by intestines reaches blood. With this plasma is slightly diluted. Even then there is no remarkable change in the osmotic pressure of plasma. Osmotic pressure of plasma comes down to 24 mm Hg from 25 mm Hg. The quantity of blood increases slightly. The changes in the blood after excess water is taken are negligible. Because the water we take mixes up with the 43 liters of water in our body and is dispersed all through the body. There is no change in capillary blood pressure either.
Water from the blood flows into intra cellular fluid when osmotic pressure of blood is decreased, the reason being the osmotic pressure in the intra cellular fluid is more than the osmotic pressure of the blood. Now we know that how water flows from the blood to extra cellular fluid.
Let us know about the inflow of water from extra cellular fluid to intra cellular fluid.
As water flows from blood to extra cellular fluid, sodium and potassium enter into blood. When sodium and potassium enter blood the osmotic pressure in the cells is reduced. Since the osmotic pressure in the cells is more than the intra cellular fluid enters the cells. In this way the water we consume enters all the cells of the body equally.
Now, let us see how kidneys are effected by the excess water we take.
changes in the kidney when 2 liters of water is taken on empty stomach
Kidneys produce 50 ml. of urine per hour in a healthy person. The outer limit of the urine the kidneys can produce is 1300 ml. When this limit is reached production decreases. Likewise when we take more water 1300 ml. urine is produced in one or one and half hours time. There is neither change in the working of kidneys nor in their efficiency or in the percentage of blood, which enters kidneys, or the filtering capacity of the kidneys altered. When urine is produced in more quantity the amount of sodium chloride and urea slightly increase. No material, which is useful to the body, goes out.
Reason for excess urination
Generally while filtering the blood kidneys absorb the necessary water and discharge excess water in the form of urine. When we take more water the filtered water is not absorbed again. So, that excess water goes out in the form of urine. Therefore, our kidneys have the great capability to retain water that is necessary and discharge the excess water.
We learnt that excess water is useful to the body and there is no harm whatsoever.In my next post I will tell you about the harm to the body when there is less amount of water.
Kidneys produce 50 ml. of urine per hour in a healthy person. The outer limit of the urine the kidneys can produce is 1300 ml. When this limit is reached production decreases. Likewise when we take more water 1300 ml. urine is produced in one or one and half hours time. There is neither change in the working of kidneys nor in their efficiency or in the percentage of blood, which enters kidneys, or the filtering capacity of the kidneys altered. When urine is produced in more quantity the amount of sodium chloride and urea slightly increase. No material, which is useful to the body, goes out.
Reason for excess urination
Generally while filtering the blood kidneys absorb the necessary water and discharge excess water in the form of urine. When we take more water the filtered water is not absorbed again. So, that excess water goes out in the form of urine. Therefore, our kidneys have the great capability to retain water that is necessary and discharge the excess water.
We learnt that excess water is useful to the body and there is no harm whatsoever.In my next post I will tell you about the harm to the body when there is less amount of water.
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