A new study has found that the offspring of older parents have a reduced lifespan. The study, which was published in the journal Nature, was conducted by researchers at the University of California, Berkeley.

The researchers studied data from over 1 million people in Sweden. They found that the children of mothers who were over 35 years old when they gave birth had a 10% higher risk of dying before the age of 70 than the children of mothers who were under 35. The risk of death was even higher for the children of fathers who were over 50 when they became fathers.

The researchers say that the link between older parental age and reduced offspring longevity is likely due to a number of factors. One possibility is that older parents have a higher risk of having children with genetic mutations that can lead to health problems. Another possibility is that older parents may not be as healthy as younger parents, and this can affect the health of their children.

The researchers say that their findings are important because they could help to explain why the average lifespan of humans has been increasing in recent decades. They say that the increase in the average lifespan could be due to the fact that people are having children at a younger age.

The researchers say that their findings also have implications for public health policy. They say that policies that encourage people to have children at a younger age could help to improve the health of the population.

References:

* [Nature](https://www.nature.com/articles/s41586-023-05833-y)