Aging rewrites immune systems, but is nature giving men and women entirely different scripts?
This is Sandra Tsing Loh with the Loh Down on Science.
Maria Sopena-Rios from the Barcelona Supercomputing Center studied immune cells from nearly a thousand adults.
The plot twist? Older women develop hyper-alert, inflammatory cells. This might explain why women face a higher risk for late-life autoimmune diseases.
Meanwhile, older men have more specialized defense cells linked to a quiet, precancerous blood condition. This could explain why certain blood cancers affect more men than women.
Doctors hope these trends will help them tailor medical care to each sex.
Looks like the story of aging has two very different spin-offs! Choose your own adventure!
Sopena-Rios, M., Ripoll-Cladellas, A., Omidi, F., Ballouz, S., Alquicira-Hernandez, J., Oelen, R., … & Melé, M. (2026). Single-cell analysis of the human immune system reveals sex-specific dynamics of immunosenescence. Nature Aging, 1-18.