Wikipedia:Articles for deletion/Late-life mortality deceleration
The article has a source, so it is |by definition not original research.  Having only a single source is an issue, and I've added a maintenance tag to reflect that, but nothing in the OP's post is a grounds for deletion
— User:Danbloch, 17:19, 1 May 2021 (UTC)
Stance: keep
Cited policy: WP:OR (Wikipedia:No original research)