A view of the lush Samoan vegetation in American Samoa, Tutuila Island. LCDR Eric Johnson/National Oceanic and Atmospheric Administration hide caption toggle caption LCDR Eric Johnson/National Oceanic and Atmospheric Administration The Salt Is Samoa's Obesity Epidemic A Harbinger For Other Developing Nations? April 7, 2016 Obesity and Type 2 diabetes are becoming more common all over the world. But the tiny Samoan islands now have the highest rates. An epidemiologist blames changes in diet brought on by globalization.