Samoa Air, the tiny local airliner in American Samoa, sparked a controversy by charging passengers by their weight. Since then it’s helped change the look of an island with the world’s highest obesity rate. Ben Tracy reports.

A study by Brown University in the US found American Samoan babies had excessive weight when born and continued to gain weight repidly after birth.

At 15 months, 38.6 percent of formula-fed boys were obese while only 23.4 percent of breast-fed boys were obese.

Co-author of a report on the study is Dr Nicola Hawley, a research fellow in the Alpert Medical School at Brown University and the Weight Control and Diabetes Research Center.