Inflammation and aging: Looking through an evolutionary lens
Peer-Reviewed Publication
Updates every hour. Last Updated: 12-Oct-2025 01:11 ET (12-Oct-2025 05:11 GMT/UTC)
It’s been a long-accepted reality that with age comes increased inflammation – so widely accepted it’s been dubbed “inflammaging.” With this increase in age-related chronic inflammation also comes serious health concerns, such as cardiovascular disease and Alzheimer’s. But according to new research, inflammaging isn’t as universal of an experience as previously thought.
Published today in Proceedings of Royal Society B, “Inflammaging is minimal among forager-horticulturalists in the Bolivian Amazon,” the work highlights little inflammaging in one non-industrialized community, and notably found an increase of inflammation with moderate levels of modernization in another.
Five of six Channel Island fox subspecies evolved larger brain-to-body ratios than mainland gray foxes. The findings challenge long-held beliefs that island species evolve smaller brains and reduced cognitive function. The larger brains may reflect a trade-off — conserving energy elsewhere to adapt cognitively to tough environments.
An international research team has identified more than 400 genes associated with accelerated aging across seven different sub-types. The findings lend support to what is known as the “geroscience hypothesis” — the idea that to treat the multiple chronic illnesses that come with aging, we must treat aging itself.