I've heard several podcasts and interviews where the doc or researcher
said they take Metformin for it's health span / life span effects and
some of the preventative effects. There are lots of articles, but many
are either you need to give info or pay for. Here are to free,there are
more.
Just thought I'd put it out for discussion.

https://www.healio.com/endocrinology...-a-wonder-drug

https://www.healio.com/endocrinology...se-health-span

Mikek