I'm saying this quite out of context, but Asians (mostly Japanese, Korean and Eastern Chinese) are missing an enzyme necessary for the treatment of alcohol by the human body.
Making them a lot less resistant to alcohol.
If everyone can live more than 200 years, this could mean that the planet as a lower orbit around the star, meaning that she does a full revolution faster.
So each year on this planet is shorter than a year on Earth, and thus, they don't actually live longer. Its' just their perception of a year...
@Lynkaster Sorry but I don't like the voices of the actors in old anime in my native language.
(It's embarrassing how bad they are most of the time...)