how do we get old?

nightangale · #1 16-07-2007, 13:55

how we get old?why we die?

matt90977 · #2 16-07-2007, 14:45

The cells that make up the human body are constantly dying, but splitting and replacing themselves before they die. Unfortunately our cells can only replace themselves a certain number of times. Eventually they just start dying off without being replaced......hence aging.

uma · #3 16-07-2007, 14:55

It is fascinating that a day can feel so long while a year goes by in a flash.

Mahesh R · #4 16-07-2007, 15:05

Cells get replaced slowly and slowly and retarding metabolism leading to overall degeneration of the body and its vital parts and their function leading to old age.

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