Older people die from not being able to perform mitosis of vital cells (http://www.ncbi.nlm.nih.gov/pubmed/12573379 http://www.ncbi.nlm.nih.gov/pubmed/12573379)

Older people die from not being able to perform mitosis of vital cells (http://www.ncbi.nlm.nih.gov/pubmed/12573379 http://www.ncbi.nlm.nih.gov/pubmed/12573379) -- a decade-old observation. She is just a new, other data point.