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High-ranking people have a higher risk of developing cancer in part because they have more cells for the disease to develop according to a study published Wednesday.
Researchers in the United States [1965] badyzed the population of three continents and found that the risk of cancer in men and women was 10% higher every 10 cm in height.
Cancer develops when normal control of the cell body ceases to function, paving the way for the development of cancer cells that manifest as tumors.
The study, published in the journal Proceedings of the Royal Society B, suggests that the risk of developing different types of cancer is more likely in tall people simply because they have more than cells, and therefore more likely that these cells become cancerous.
that this extra risk (…) can not be reduced " tells AFP Leonard Nunney, author of the study, University of California Riverside
It is thought that some mammals, such as elephants and giraffes, whose bodies have more cells than smaller animals, have developed additional defenses against cancer.
But nothing proves that it works the same way in individuals like humans.
Average height it varies from one region to another, but in the United States, the average for men is 176 cm and for women of 162 cm
Researchers have already established that tall people generally have a higher risk of cancer.But Nunney's study on populations in the US, Europe and Korea of the South shows that is probably the case because it is They have more cells where something can happen.
In particular, larger individuals have a greater risk of developing melanoma because they have a higher cell / cell ratio and simply more skin than people of average height.
However, the risk of cancer of the stomach, mouth or cervix seems unrelated Size
The size is largely determined by the genes, but Nunney says that the environment during childhood also has an effect, and therefore an impact badociated with the risk of cancer.
The environment and genetic factors act during childhood and both have a significant effect on the size of adults, "he said.
" There is no reason to believe that its effects on the risk of cancer are dif It is known that the vector is the number of cells. "
It is known that obesity in adulthood increases the individual risk of cancer, but for a reason different from that of height.
Obesity, unlike height, increases the size of the cells but does not create many more.
"Therefore, the causality of an increased risk of cancer related to obesity is different than that of the effect of Nunney added.
Nunney, however, said that tall people should not worry, because height is not the main factor or the main factor in the development of the disease.
"I do not think that extreme measures are necessary in general: the effect is statistical and relatively low for most people," he said.
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