Biochemical Cause of Body Ageing

Magnus Lynch mdl24 at
Fri Nov 28 22:23:23 EST 1997

I am sorry if this is at a level too elementary for this newsgroup.

I am a medical student at Cambridge University. Could somebody please
tell me if the cause of ageing phenomena in the human body is believed
to be some form of inbuilt 'molecular clock' (telomeres?), random
mutations in the DNA, or some other mechanism.

If there is no inbuilt clock in the body which runs from birth to death,
how does the body know to initiate events such as puberty?

Thankyou for any help.

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