Anti-ageing protein injection boosts monkeys’ memories (news article & attached research article)

TL;DR
UCSF researchers injected monkeys with a protein named "klotho" that has links to aging but its function is unknown. The group already did this in mice, this time they did it in monkeys; low-dose injection caused monkeys to do better on cognitive tasks.

I don't know what klotho is or why only low-dose injection worked but... I have never seen a study like this that actually worked before, so this is new and interesting to me. Interestingly this article has like one experiment but went into Nature Aging which is... quite surprising to me.

Research article (open access): https://doi.org/10.1038/s43587-023-00441-x