As much as we might want to live to a ripe old age, the human lifespan it seems has reached its natural limit. The oldest documented person reached 122 - and a new study suggests its unlikely anyone will surpass that.
Researchers including Jan Vijg of the Albert Einstein College of Medicine in New York, have been poring through data from the Human Mortality Database.
He explains why no matter how advanced medicine gets, we won't be living much past 115.