People in Brazil are living past 110 and scientists want to know why

Hi from Argentina! I think we have a very similar system. 110 years ago men got their national ID number at 18 (during conscription) and women didn't have a register until 30 year later (~1940).

(And when women got it, many lied to appear to be younger, like my gran-grandma that drop 4 years.)

So, expect a lot of unreliable data.