The study conducted by the researchers of Boston University have found out that 150 genes have been identified, which will be specifying the longevity or the life-span of humans.

The study was made on more than 1,000 Caucasians with a median age of 103 and it was found that 77% of them had 150 such genetic variants. Those who are above the age of 110, have the highest proportion of longevity-genes, and such persons are one in seven million.

Those, who live up to the age of 100 are only one in 6,000 people, in industrialized counties.

The study also concluded that women are more likely to live longer than man, but men are less prone to diseases and disabilities.

A genetic model was developed by the scientists for this purpose, which will soon be available online, so that people may come to know if they will be living longer according to their genes group. But such a model does not take into consideration the lifestyles, environmental factors and not yet discovered genetic influences.

As per the Science paper, the scientists may one day discover all the 23,000 or so genes and the risk factors associated with the longevity.