Why do kidneys fail?

Why do kidneys fail?
Among a host of reasons for why kidneys fail, high blood pressure and diabetes are the most culpable causes of all.

Kidney failure, or renal insufficiency, is a medical condition wherein the kidneys fail to filter blood sufficiently, from various waste products and toxins flowing in it. The failure of kidneys can be traced down to a number of reasons, of which the most prominent ones are:

Diabetes: The single-biggest contributing factor in kidney failures, diabetes severely hampers the blood filtering capacity of the kidneys. A person suffering from diabetes, and not in the practice of regulating his sugar levels properly, runs a very high risk of damaging the nephrons present within his kidneys. It is these nephrons, which are responsible for the function of filtering out waste products and fluids present in blood. So, when these essential body parts go kaput, it’s no wonder that the kidneys give in.

High blood pressure: High blood pressure is the act of blood rushing at a high speed against the blood vessels. In the case of kidneys, blood pressure applies in the way that, there are a lot of small blood vessels present in the kidneys, which are left excruciated when hot blood flows down them at great speeds. This results in the filtering process being impeded and the kidney failing eventually.

Inflammation of kidneys: Many times, it is observed that the filtering units present inside the kidneys become swollen, and give rise to problems such as reduction in the output of urine, leakage of blood and protein, etc. through urine. This kind of swelling is not only limited to kidneys, but also to various other parts of the body.

Cysts, tumors and stones: Another common cause of renal failures is found to be the development of tumors, stones and cysts inside the kidneys. These cause the surrounding tissues to rupture and hinder the filtering process. Sometimes, an enlarged prostate gland is also enough to bring about a kidney collapse.

Malformations and infections: These kinds of anomalies are often found to be present in pregnant women. When a woman carries a baby in her womb, the urethra tends to narrow down in order to safeguard the child’s posture. As a consequence, the normal flow of urine is disrupted, making it flow back up to the kidney again causing severe infections and kidney failure gradually. In men, tumors, cysts, stones, etc. prevent the smooth flow of urine, which causes infection in and around the kidneys, thereby effecting kidney failure.

Obscurity: Sometimes it’s difficult to determine a particular cause for the failure of kidneys. There might be a number of similar reasons in the mix, which makes it tough to pinpoint a singular reason. Also, it happens frequently that a patient might be well into the last stages of kidney failure, and no doctor or diagnosis had detected it yet. In such a condition too, it becomes really difficult to establish a correct cause.   

Therefore, kidney failure can be caused due to a number of reasons.

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