The Kidneys' Flawless Purification System

It is no easy task to invent a machine just 10 cm (4 in) in size and then establish a system to purify the blood, water, and other fluids inside it. A whole factory would be needed to accomplish these tasks. Even if one managed to do this in such a small space, the performance and results would still be inadequate. One might manage to purify water or other fluids, but doing so for blood, which is essential for human beings, has not yet been achieved in such a small device.

However, all human beings are actually perfect examples of this special purification system, by means of the kidneys, each one of which is about 10 cm (4 in) in size and weighs 100 grams (3.5 ounce). This small space harbors around 1 million micro-purifiers that constantly clean the blood, which carries everything that makes continued life possible, and regulate the density of the water that reaches all of your cells and tissues. The kidneys, which know how much fluid is in your tissues as well as its level of concentration, carry out the necessary adjustments by His will so that we can go on living without difficulty.

Everybody more or less knows what happens when the kidneys fail to function: the person is hooked up to a dialysis machine several times a week until a new kidney can be transplanted. When the machine can no longer fulfill its purpose, the person dies. This example puts into stark relief the importance and miraculous aspect of this extraordinary purification plant.

This extraordinarily detailed and flawless system represents the artistry of Allah, Who created humanity with a flawless perfection. This organ alone is enough for a person to see His greatness and turn to faith:

He has given you everything for which you have asked Him. If you tried to number Allah’s blessings, you could never count them. Humanity is indeed wrongdoing, ungrateful. (Surah Ibrahim, 34)