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Protein Powder And Kidney Damage

- June 27, 2017

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Protein toxicity is the effect of the buildup of protein metabolic waste compounds due to insufficient kidney function. It can occur in people with preexisting kidney disease, or those who have lost kidney function due to age.


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Definition

Protein toxicity occurs when the body is unable to get rid of the potentially toxic wastes that are generated as a result of protein metabolism.


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Occurrence

Protein toxicity occurs when an individual with impaired kidney function consumes protein rich diet. Specifically proteins from animal sources that are rapidly absorbed into the blood stream and are rapidly metabolized causing the release of high concentration of toxic nitrogenous waste material


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Effects of a high protein diet

A high protein diet is a health concern for those suffering from renal disease. The main concern is that a high protein intake may promote further renal damage that can lead to protein toxicity. The physiological changes induced by an increased protein intake, such as an increased glomerular pressure and hyperfiltration, place further strain on already damaged kidneys. This strain can cause the kidneys to be unable to metabolize the protein adequately and subsequent toxicity may occur. A diet high in protein can lead to complications for those with renal disease and has been linked to further progression of the disease. The well-known Nurse's Health Study found a correlation between the loss of kidney function and an increased dietary intake of animal protein by patients who had already been diagnosed with renal disease. This association suggests that a total protein intake that exceeds the recommendations may accelerate renal disease and lead to risk of protein toxicity within a diseased individual. For this reason, dietary protein restriction is a common treatment for patients with renal disease in which proteinuria is present. Protein restricted patients have been shown to have slower rates of progression of their renal diseases.

Several studies, however, have found no evidence of protein toxicity due to high protein intakes on kidney function in healthy people. Diets that regularly exceed the recommendations for protein intake have been found to lead to an increased glomerular filtration rate in the kidneys and also have an effect on the hormone systems in the body. It is well established that these physiological effects are harmful to individuals with renal disease, but research has not found these responses to be detrimental to those who are healthy and demonstrate adequate renal activity. In people with healthy kidney function, the kidneys work continuously to excrete the by-products of protein metabolism which prevents protein toxicity from occurring. In response to an increased consumption of dietary protein, the kidneys maintain homeostasis within the body by operating at an increased capacity, producing a higher amount of urea and subsequently excreting it from the body. Although some have proposed that this increase in waste production and excretion will cause increased strain on the kidneys, other research has not supported this. Currently, evidence suggests that changes in renal function that occur in response to an increased dietary protein intake are part of the normal adaptive system employed by the body to sustain homeostasis. In a healthy individual with well-functioning kidneys, there is no need for concern that an increased dietary protein intake will lead to protein toxicity and decreased renal function.


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Symptoms

Unexplained vomiting and a loss of appetite are indicators of protein toxicity. If those two symptoms are accompanied by an ammonia quality on the breath the on-set of kidney failure is a likely culprit. People with kidney disease, who are not on dialysis, are advised to avoid consumption of protein if possible, as consuming too much accelerates the condition and can lead to death. Most of the problems stem from the accumulation of unfiltered toxins and wastes from protein metabolism.

Kidney function naturally declines with age due to the gradual loss of nephrons (filters) in the kidney. Therefore, a 90-year-old cannot safely consume the same amount of protein as a 20-year-old.

Common causes of kidney disease include diabetes, heart disease, long term untreated high blood pressure, as well as abuse of analgesics like ibuprofen, aspirin, and paracetamol. Kidney disease like the Polycystic Disease can be genetic in nature and progress as the patient ages.


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Diagnosis

A confirmation of kidney failure is obtained by performing a blood test which measures the concentration of creatinine and urea.

Source of the article : Wikipedia



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