Body Weight Perceptions as a Determinant of Obesity and Emerging Eating Disorders Among Young Cameroonian Migrants

African migrants living in High-Income Countries are more vulnerable to socio-economic insecurity, as well as higher morbidity and mortality. In their cultural background, these populations, especially the Bamiléké ethnic group from Cameroon, tend to socially value stoutness as a symbol of health and prosperity, potentially obesogenic in urban areas. However, recent studies showed that urbanisation has led to an acculturation process toward the promotion of thinness in young African adults, exposing them to emerging eating disorders. From this perspective, we conducted an original mixed-methods anthropological study, through a repeated qualitative cross-sectional study (two time points in 2011 and 2021) and a quantitative survey (in 2012), in young Cameroonian Bamiléké [18–39 y] migrating to urban Cameroon and France to innovatively explore obesity- and eating disorder-related body weight perceptions. We observed that the qualitative rural–urban tendencies were similar between 2011 and 2021. While rural people tended to value stoutness as a symbol of prosperity, wellbeing and peacefulness, urban people, especially in Paris, tended to value thinness, even extreme thinness, as a symbol of beauty and health and reported a pronounced weight stigma. Quantitatively, we found that Parisian Bamiléké had a desired and ideal body size (DBS and IBS) in the normal-weight category with standard deviations reaching or close to the underweight category, whereas the rural and urban ones had DBS and IBS means between normal-weight and overweight categories. Moreover, we observed a high prevalence of overweight and obesity in both urban groups while the Parisian one tended to underestimate one’s weight and expected to lose it. Public health policies should consider body image as a persisting risk factor for obesity and also a risk factor for emerging eating disorders in young Cameroonian migrants experiencing this dual burden within the urban transition.