In this video Dr Cohen talks about how mitochondria age and how they are not all the same but different in each tissue.

Mitochondrial DNA variation in Alzheimer’s disease reveals a unique microprotein called SHMOOSE

https://www.nature.com/articles/s41380-022-01769-3

Professor Pinchas Cohen is the dean of the USC Leonard Davis School of Gerontology. He is a pioneer in the emerging science of mitochondria-derived peptides and their possible therapeutic benefits for diabetes, Alzheimer's and other diseases of aging, an area which remains the focus of his current research.

Mitochondria-derived peptides in aging and healthspan

https://pubmed.ncbi.nlm.nih.gov/35499074/

Dr Cohen's page at USC

https://gero.usc.edu/faculty/cohen/

The Cohen Lab

https://gero.usc.edu/labs/cohenlab/

CohBar Inc. Web site

https://www.cohbar.com/