By Lillian So Chan
Scientists have discovered that some specific gut bacteria considered beneficial to human health are dominant in the gut microbiome of Italian and Chinese nonagenarians (90-99 years old), centenarians (99-104 years old), and super-centenarians (105 years and older).
They suggested that healthy people who live extremely long lives share a common gut microbiome signature of longevity.
A study carried out in 15 Italian centenarians and 24 super-centenarians reported that these two groups both carry an abundance of Bacteroidetes and Firmicutes – bacteria considered beneficial to human health.
These results are in line with another study of 4 centenarians and 63 nonagenarians in China.
Both studies highlighted how specific beneficial gut bacteria are dominant in the gut microbiome of healthy Italian and Chinese centenarians and super-centenarians, providing strong evidence for a functional link between healthy gut microbiome and healthy aging.