Water, Health and Nutrition
A
human being can survive days, weeks, or months without food, but only for about four
days without water.
Shortage
of water in the human body can aggravate or contribute to a number of
ailments.
Water
is the main coolant of the body. The body dissipates heat and toxins
through perspiration. This water depletion has to be replaced.
Feeling
thirsty is not a reliable indicator that we need to drink for by that time we
might already be dehydrated.
It
takes about 30 minutes for the body to tell us it needs more water – when we
feel weak and dizzy, begin to have headaches, nausea and cramps.
The
human body is from 70% to 80% water, depending on how much body fat one
has. The brain is about 75% water, the blood 80% and muscles and tissues
about 70%. Every system in the body depends on water.
Water
is the key to human metabolism. Water regulates the body temperature;
facilitates the removal of wastes; carries nutrients and oxygen to the cells;
cushions the joints; prevents constipation; lessens the burden on the kidneys
and liver by removing toxins.
Water
dissolves food, minerals and nutrients to make them digestible to the
body.
Without
adequate water we suffer heat exhaustion, our performance is impaired and we
endanger straining our cardiovascular system.
Sufficient
water intake results to clear or very pale yellow and virtually odorless
urine. Less water intake would likely result to dark yellow,
strong-smelling urine.
Drinking
plenty of water speed up the elimination of feces from the colon and urine from
the bladder, thereby helping to prevent and treat constipation and urinary
tract infection.
Researchers
are now suspecting that getting enough water lowers the risk of cancer, by
flushing out or diluting carcinogens in the bladder and colon.
Kidney
stones form when calcium, uric acid, and other substances in the urine become
sufficiently concentrated to form crystals.
Drinking
lots of water helps prevent stone, presumably by keeping those concentrations
low. People who already have had kidney stones need more water to prevent
recurrence.
Uric
acid is produced by the body’s metabolism of nucleic acids, specifically
purines – which are formed both from the normal breakdown of body tissues and
from the dietary intake of proteins.
In addition, some uric acid comes from foods that are high in proteins.
If there is more uric acid that the kidneys can excrete, the excess forms crystals that are eventually deposited in the joints. The resulting inflammation causes extreme pain.
In
addition to medication, a change of lifestyle can help.
Avoiding
alcohol, control of high blood pressure, losing weight and drinking plenty of
water can bring blood levels of uric acid to near normal levels.
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