Your hundred trillion cells work together in great harmony, just as if they were aware of one another. This harmony can be seen in the number of times your heart beats as you read these words, the level of calcium stored in your bones, your blood-sugar level, the amount of blood filtered by your kidneys every minute—in these, and thousands of other similar details.
Bearing all these systems in mind, you might compare the human body to a giant orchestra consisting of 100 trillion musicians, playing the most incomparable compositions 24 hours a day. The tempo sometimes speeds up, or slows down; sometimes with a fast tempo, and at others with a calmer melody. However, the musicians in the orchestra never fall out of tune with one another. So Who is it who conducts this matchless orchestra? How can millions of different musicians are able to play their common notes at the same time, with different instruments?
Hormones are proteins charged with carrying messages between the 100 trillion cells in the human body cells. Consider, for example, the secretin that starts being secreted during food digestion. Though you may be quite unaware of this hormone, it prevents your stomach from being harmed by acid. It’s impossible for you to prevent this or to protect yourself by any other means. And this applies to all the other organs, enzymes and systems in your body.
A perfect system in all aspects has been established in the human body, although people are unaware of what is taking place within them. Substances in your body issue instructions on your behalf and maintain your body’s equilibrium, directing you to eat or drink or move more quickly, even while you are unaware of these directions. Your body’s survival depends on a chain of command controlled by means of hormones.
How did this system come into being? How is it regulated? How do these hormones know where and when to act?
As you shall see in the pages that follow, it is essential for the hormonal system to have emerged in its entirety, all at once. It is impossible to imagine hormones acquiring all their properties over the course of time. Like all other systems in the body, the hormonal system emerged in a single moment. In other words, it was created. The details of this system, one of the proofs of Allah’s existence and infinite might, again encourage us to consider His creation. In verses, Allah commands people to think about the entities He has created, and to turn to Him:
It is He Who sends down water from the sky. From it you drink and from it come the shrubs among which you graze your herds. And by it He makes crops grow for you and olives and dates and grapes and fruit of every kind. There is certainly a Sign in that for people who reflect. He has made night and day subservient to you, and the Sun and Moon and stars, all subject to His command. There are certainly Signs in that for people who use their intellect. And also the things of varying colors He has created for you in the earth. There is certainly a Sign in that for people who pay heed. It is He Who made the sea subservient to you so that you can eat fresh flesh from it and bring out from it ornaments to wear. And you see the ships cleaving through it so that you can seek His bounty, and so that hopefully you will show thanks. He cast firmly embedded mountains on the earth so it would not move under you, and rivers and pathways so that hopefully you would be guided, and landmarks. And they are guided by the stars. Is He Who creates like him who does not create? So will you not pay heed? (Surat an-Nahl: 10-17)
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