It has long been a subject of debate: to what extent do genes determine how long we live? New research from the Weizmann Institute shows that inherited factors are much more important than previous studies indicated. According to this study, genetic differences can explain about half of the variation in lifespan between people. This is much more than the previously assumed minor role of DNA.
The researchers collected data from a large number of twins, including individuals who grew up apart from their twin brother or sister. By applying special mathematical models, while excluding deaths from accidents and external causes, they were able to better isolate the pure effect of genes. This revealed a clear influence of heredity that had largely remained hidden until now.
The findings are important because they show that our genes help determine how long we can live, alongside lifestyle and environment. The environment naturally remains essential as well: a healthy diet, exercise and a good living environment are indispensable. Nevertheless, this knowledge provides more insight into the biological basis of ageing and could lead to better preventive measures and personalised care in the future.
For people interested in healthy ageing, this could mean that genetic research receives increasing attention. Understanding which genes play a role helps us to manage our health more smartly and potentially improve life expectancy.
Source: Original article
