19/06/2026
π’ New research from our team, just published in Nature Aging!
Why do we age? And why do some species live so much longer than others? A key piece of the puzzle may lie in our stem cells.
𧬠All the different ways DNA methylation changes with age can be explained by a single underlying mechanism: stem cell division dynamics.
π°οΈ People who age faster epigenetically, such as smokers, show a distinct biological signature suggesting their stem cell compartment is smaller and/or divides more rapidly.
ππ¬π§ Similar trends are seen between species too: across 11 mammalian species, longer-lived animals have higher stem cell pool-to-division ratios, indicating stem cell dynamics may be a key evolutionary driver of lifespan.
This work used methylation data from Generation Scotland participants. A huge thank you to everyone who has contributed to this incredible resource. π
Read the full paper:
Crofts et al. (2026): https://www.nature.com/articles/s43587-026-01125-y