By Martha Casantosan
Kidneys.
Kidneys are some of the most vital organs of the human
anatomy. It filters out the waste in our body that travels through body fluids.
It normally processes 200 quarts of blood and filters the waste. Out of that
amount it usually can separate about 2 quarts of waste material that it
disposes off through urination. This process also keeps the blood chemically
balanced.
Protein's effect on kidneys.
For years it was believed that excess protein consumption
can harm the kidneys until recent studies disproved this notion. These studies
show that, generally, high-protein diets are tolerated by healthy adults. It's
a different story for a person who already has a kidney problem, though. Since
the kidney filters out the liquid waste products in our body, a person with a
damaged kidney will have problems getting rid of these waste from protein
metabolism.
Protein is found in your bones, muscles, skin, organs,
blood, hormones and enzymes. It is basically the building block of your body
whereas amino acids are the building blocks of protein. The body, though, can't
store excess protein. During digestion and metabolism, protein is broken down
into amino acids. These amino acids bond with certain compounds to perform it's
specific function. The "extra" amino acids, however, are stripped of
nitrogen. These non-nitrogen parts are used for energy or converted into fat.
The remaining compound (nitrogen) becomes nitrogen waste and is eventually
excreted by the kidneys and liver.
Studies.
In one study, 77 young men underwent heavy training and a
high protein diet for several weeks. Beforehand, their blood urea nitrogen,
uric acid and creatinine levels were tested to know the condition of their
kidneys. These same parameters were monitored throughout the study and it
showed that their diet did not put stress on their kidneys. Another study
compared a group of body builders and a group of highly trained athletes. Both
groups consume high amounts of protein, the body builders more than the athletes.
On average, bodybuilders consume about 169g of protein a day while the athletes
about 99g a day. Some of the body builders consume up to 2.8g / kilogram.
Although some parameters (like uric acid) is high on bodybuilders, the tests
did not show any kind of strain to their kidneys and kidney function. For those
who already have kidney problems, high-protein diets may increase the risk of
kidney stones. This does not mean that people with reduced renal function can't
take protein anymore. In a study supported by grants from Natural Sciences and
Engineering Research Council of Canada and Manitoba Institute of Child Health,
it was concluded that protein from soy and other non-animal produce causes
lesser damage to the kidneys (that already has a problem) than those that come
from meat, and dairy products.
Sadly, not a lot of people know when they have reduced
kidney function. This is because, for most people, early stages of reduced
renal function do not show. If a person has kidney or liver disease or any chronic
health condition, it is advised to talk to a physician first before going on a
new diet.
Martha Casantosan
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