Thank you Peter! It was lovely to see your comment!
Like you, I bought my copy of Sapiens years ago but didn't read it until last year. :) It's actually a very interesting read. So give it a go.
Yes, you're right. Dr Sinclair did say that he took metformin in multiple occasions, and thank you for mentioning berberine, which was something I didn't know.
Regarding the "failing to retain talent" part in the book The Wake-Up Call, if my understanding is correct, it actually refers to the public sector specifically rather than the society in general. That's why the example of the Singapore government is used in the book.
Thank you for reading my blog post and I wish you and your family a healthy and joyous Year of Tiger!