French 60 Years rule...
...was enforced first, as a company regulation, by Air-France, while Air-Inter (then the biggest in France for domestic flights) was permitting the old ones to continue flying after 60.
Then a law was passed applied to all airlines, and moreover Air-Inter was absorbed by Air-France....so now, after a transitory period, there are no more airline pilots flying after 60 in France.
The main argument for this law (which was promoted by French airline pilot's unions) was to lower the number of unemployed pilots.
For Pirate: your argument about the uncertainty of medical checks can be used in both directions, either when they stop yo or when they give you the right to fly: which one is the most dangerous for the community?
Then, if I believe your GP, the risk of heart attack is diminishing after 60.....Better you try to find epidemiloogic stats than trust this one...