Samoan have a high degree of a particular variant of gene CREBRF that's highly associated with high BMI (see https://doi.org/10.1038/ng.3620 https://doi.org/10.

Samoan have a high degree of a particular variant of gene CREBRF that's highly associated with high BMI (see https://doi.org/10.1038/ng.3620 https://doi.org/10.1038/ng.3620). Pop-Sci says it's an adaptation to the life in an island (might also be a founder effect?)