What happens in the brain as we age? Might it be at all possible to rejuvenate nerve cells? Seeking answers to these questions, a research group led by Frank Edenhofer in the Department of Molecular Biology at the University of Innsbruck has succeeded for the first time in observing mini-brains age.

As we get older, our brain ages along with us: We find learning new things more difficult and our memory occasionally fails us. But sometimes the symptoms may be less harmless. Aging is a risk factor for neurodegenerative diseases—such as Parkinson's and Alzheimer's—in which nerve cells die off particularly quickly and in large numbers. Important brain functions are irretrievably lost, because, unlike skin cells, the body cannot replace neurons once they have died.

https://medicalxpress.com/news/2025-02-miniature-brain-molecular-fountain-youth.html