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He is one of the most most feared words today. And yet, we all know someone who unfortunately suffers. Although cancer is not the leading cause of death in the world (this dubious honor has cardiovascular disease ) gives us much of fear .
Run Thousands of theories about it. It is the air that we breathe the food we eat, the aerosols the Teflon in the pans the palm oil it There are even people pointing to the magnets in the refrigerator. The question is simple although the answer is not: why do we get sick of cancer?
The disease that can kill a dog in less than fifteen minutes
A. Nuño
He is the best friend of man, but he is not free of diseases, some as terrible and as deadly as gastric dilatation and torsion
This is a problem studied for years, of course. . Perhaps before we talk about the more philosophical "why", we should point out the "how," which seems easier to answer and leaves out theories on free will and fate of each person. [19659007] Cells
Although French production & # 39; Once upon a time life & # 39; we had already learned a lot, we will remember: human beings are made of cells. As they explain in "The Conversation", they all have a special job to do. They build our various organs like our skin, our brain and our bones . Some cells (like the brain and bones) can live for many years, while others (like red blood cells ) live only a few weeks. Even if it seems cliché, we have so many stars in the sky . A beautiful poetic paradox .
But what happens when, without explanation, these cells go crazy and begin to grow, refusing to die? Exactly. That's how cancer begins. They may become tumor-forming or, in some cases, as leukemia it spreads through the blood
when the cells begin to no longer be controlled. and refuse to die, we utter the dreaded word
Cancer cells can also be moved to other parts of our body where they would not normally be found. This causes the important organs to stop doing their job and make us feel very bad or even die.
The mystery of DNA
The genome is the set of genes contained in chromosomes . The cells contain the instructions for making copies of themselves, which are stored in said genome which consists of an element that rings for sure and is called DNA . And to introduce a curious concept: the DNA of all human beings of the planet in chain, would reach the moon seven times and return.
But, apart from that, this DNA code only includes four different chemical "letters" : A, C, T, and G . And the instructions in each cell are formed by about 6 billion of these letters. Each of them is divided to make a copy of himself. A work of Chinese, clearly, which is perfectly illustrated here:
But of course, as arrives at the man sometimes the cells are also false, and that's what we call mutation errors. When they "shoot" and escape control, it is then that they cause tumors .
And now the why
We knew how, although you may know it already, but what really matters to us is the why. Why are there people who get sick and others who are not? Why are there people who have not smoked in life and have lung cancer ? Why that and not me? (or vice versa)
Researchers have been asking the same question for years. They think it's a mix of bad luck and bad decisions. Exposure to the sun, alcohol, tobacco, certain foods and even to certain viruses may increase our risk of mutations in our DNA . Because these changes accumulate slowly, cancer appears more often in adults.
Children can sometimes suffer from it, but fortunately it is relatively rare. In general, the evolution should lessen the fact that people were suffering from the disease, but since most people contract it after having children, the evolution does not. not act. People likely to have a higher risk of cancer because of their genes live long enough to pbad on these genes to their children
. healthy and sensitive but it is not possible to prevent it completely. We can almost never say for sure why a person has cancer, that "why" is not a mathematical formula and that it still can not be completely solved. Maybe one day.
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