Global Immortality Prohibition

The advance in rejuvenation therapies in Midoria, and the planet overpopulation led to the creation of the Global Immortality Prohibition.
This prohibition forbids the implantation of hearts in people over 50 years old. Heart implants have a hardwired functional limit of 75 years, after which the bearer dies. This makes the maximum age for Midorians to be 125 years.
The only person which has successfully avoided such limit is the Mafia and religious leader Lao Xu, whose age is in the range of 287 years old.