Re: What sets off the begin of climacterium?

Dear Ariane,

You are right, the climacteric period is attributed to the limited supply 
of eggs at birth. It usually begins between the ages of 45 and 55, when the 
number of eggs in the woman's ovaries become depleted. Menopause is 
preceeded by a period of increasingly irregular ovarian cycles, during this 
time estrogen levels diminish and this causes the physical and emotional 
changes associated with menopause.