I am john cheriyan a zoology graduate and working for 25 years.One of my ambition was to start a blog and share my knowledge and collect the information from the entire world about the process of human ageing.when we become old everybody dislike us ,what we earned how much we loved others everything worthless.
The free radical theory of aging
Dr.Denham Herman a scientific researcher who proposed the 'free radical theory ofaging' in the year 1956.according to this theory the process of aging is due to oxidative damage of cell organelles and other cytoplasmic contents by free radicals. intially it was assumed that the free radicals such as ROS(reactive oxygen species) produced during normal respiratory process.The free radical theory got more attention when researchers studied the cause of cancer ,Alzheimer disease,and heart diseases .This theory realises that old age is just another disease,our old age is starting when mitochondrial DNA (mtDNA) get damaged by free radicals.1970s many scientist involved in Reserch related to this theory and in 1980 J.Miquel clearly explained the mitochondrial involvement in the production of free radicals,the theory is known as mitochondrial theory of free radicals.
Animal cell,inrenal view (mitochondria distributed incytoplasm)