Hmongs had a lot of sudden death in their sleep. And they did it before it was trendy.
https://www.latimes.com/archives/la-xpm-1988-04-24-me-2575-story.html
Brugada syndrome. We had a 40ish Asian man in our icu who suffered a sudden cardiac arrest. He had 3 sons, late teens that we tested and they were all positive for it. They all got aicd’s