In regions known for longevity—often called Blue Zones—people frequently live past 100 in good health. Scientists analyzing their biology have found a common thread: their internal microbiomes look different.
Cohort studies from longevity regions like Italy and Japan reveal that centenarians tend to have greater abundances of Bifidobacterium species, particularly B. adolescentis, compared to less healthy elderly individuals.
The Longevity Marker While B. adolescentis typically declines with age in the general population, its preservation in these "super-agers" suggests it plays a protective role. High levels of this species are associated with a healthier internal environment and reduced chronic inflammation.
The Takeaway: We can learn from the biology of the longest-lived people. Maintaining high levels of these specific microbes is a strategy for extending healthspan—the period of life spent in good health.