The Gallup poll points out that the increase occurred concurrently with a new batch of fad diets, which promise quick results -- often at the cost of eliminating important nutrients. Because many of them have cropped up recently, the long-term effects of these diets in keeping weight off has not yet been thoroughly studied.
Izibalo ze-Gallup zikhomba ukuthi ukunyuka kwenzeka kanye kanye nezinhlelo zokudla ezintsha ezinedumela, ezithembisa imiphumela esheshayo – ngokuvamile okuye kubize ukuthi ungayitholi imisoco ebalulekile. Ngoba eziningi zazo zisanda kuqhibuka, imithelela yazo ekwehliseni isisindo ayikakacwaningeki ngokucophelela.