If Saturn is in 8th house, then the native will have a life span of 75 years. He will be poor, will have intimacy with low caste women and will earn his livelihood by serving others.
If Saturn is in his own sign or in his sign of exaltation, the native will have a still longer span of life. If the lord of the-8th house is in the house of his enemy or in his sign of debilitation, the native will be short lived and he will earn his livelihood with difficulty and may have to go without food.
All malefics in the 8th house shorten the longevity of the native but Saturn in this house is believed to give good longevity. The native will face poverty as Saturn will afflict the second house by aspecting it. As regards effects on longevity it will be relevant to quote the following sloka from Bhavartha Ratnakar:-
This means that Saturn in the 8th house gives long life. If the lord of the 8th is with Ketu in the ascendant, the native will be short lived.
Other Views
Brihat Jatak - The native will have a limited number of issues and will have defective eye sight.
Phaldeepika- The native will be unclean, will suffer from piles, will be poor, cruel minded and will remain in want of food.
Saravali- The native will suffer from diseases of the anus and will be short lived and incapable of succeeding in any venture.
Chamatkar Chintamani- The native will suffer loss of wealth, will be without friends, sickly and evil minded.