Prior to sterilisation the metabolism of your cat self adjusts to variable energy requirements your cat eats only as much as to cover his or her energy demands after the sterilisation however your cat loses this regulation capability and eats more than necessary this can lead to weight gain and health problems within 48 hours of the sterilisation taking place your cats ingestion rises with 20 while his energy demand declines by 30 bladder stones are frequent problems for sterilized c