How do the new cells appear in our body? How many times? It is very difficult to pinpoint the number of cells that are born and die in our body each day, but scientists estimate that the average adult body produces 300 million cells per minute, or 432 billion every 24 hours.
This permanent renewal occurs mainly in the epithelial and connective tissues, which are responsible for covering and supporting the human body.
This rate can vary in some situations, such as when the body needs to repair an injury.
But the emergence of new cells does not happen uniformly. The epithelial tissue that lines the stomach, for example, is renewed every four or seven days.
The epidermis of the skin (the most superficial layer of the body) is completely renewed in 15-30 days, depending on the age of the individual.
The ability to renew and repair tissues decreases with age.
There are also exceptions: heart muscle cells and neurons do not have a natural replacement. Once lost, no new ones arise.
Source: Evandro NieroPhD in Cellular and Molecular Biology at the USP (University of São Paulo).
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