Key points from article :
Number of genetic mutations a person amasses in reproductive cells is linked to a person's lifespan.
Analysed accumulation of mutations in reproductive cells across three generations.
Those who had a low number of mutations had an average survival advantage of five years.
Women who had fewer mutations were fertile even at an older age and had more livebirths.
Accumulation of mutations drives ageing, damaging and death.
Analysed genetic information of three generations of 41 families.
Research by University of Utah, published in the journal Scientific Reports.
