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Why we are getting old?

Why we are getting old?

The answer is simple,the 'errors'.The errors that happening during cell multiplication and by the influences of external factors. Somany  changes happens in DNA every year,most important one is the shortening of telomeres. A telomere is the tail end of chromosomes. The free radical theory of -ageing, which devolved in1950 says that the reactive oxygen species(ROS)  produced during mitochondrial functions react with their DNA (mtDNA)  and other cell organelles, makes sever damage and declined mitochondrial functions that leads us to aging. ROS is produced when mitochondria make energy from food particles,when we eat more the mitochondria produce more energy and more ROS also evolved as by product. So having a comparatively limited amount of diet and  anti oxidant rich food,such as green vegetables fruits etc can increase life span. 
In the year 1961 an American scientist L.Hayflick discovered that human cells have limited capacity to divide. Human cells ar…