Behind The Secret Humans Grow Old

The Scientists wanted to know what caused the man to grow old and die. Various studies conducted by the cell biologist. Cell biology is the study of living things, especially about cells, chromosomes and genes.

Human body is composed of millions of cells. Cell is the smallest part of the body and the cells can only be seen through a microscope. Turned out to be a small part of the cell is a chromosome, and a small section of a chromosome is called a gene. 

Scientists suspect that the chromosomes and the genes responsible for the shortness of human life. especially, a row of genes at chromosome ends.

Row at the end of the chromosome gene called telomerase. when a young man, long telomerase size is long, and  when 20-years-old man the turned telomerase start out to be short. The telomerase duty told to the cells to create new cells. Then, new cells are used to replace damaged cell. If telomerase shortened, then the command to create new cells is reduced.

 When after the age of 20 years, human skin cells decreased one percent, oil production in the skin decreases, and the amount of blood delivered to the brain was reduced.
Every day telomerase become shortened, man becomes wrinkled and senile in old time. if telomerase depleted in the body, the new cells can not be made yet, and then human died. 

 sourced by : Bobo