This systematic review investigates evidence on the association between body image concerns and weight-related behaviours of adolescents and emerging adults. It includes peer-reviewed journal articles reporting research involving body image concerns and weight-related behaviours of adolescents and emerging adults, published between 2005–2017, and located through systematic searches from four databases. This review includes studies from 11 countries or regions: United States (n = 13), Asia (n = 9), Europe (n = 8), Middle East (n = 3), South America (Brazil; n = 3), Canada (n = 3), Australia (n = 1), New Zealand (n = 1), Trinidad (n = 1), Turkey (n = 1) and Seychelles (n = 1); 24 different countries (n = 1); three Asian countries and the United States (n = 1). Out of 46 studies included in this review, 45 studies reported a positive association between body image concerns and weight-related behaviours. Adolescents and emerging adults who misperceived their weight engaged in weight-related behaviours. Higher body dissatisfaction had a significant association in the development of eating disorders and extreme weight-loss behaviours. Body image concerns play a significant role in adolescents and emerging adults engaging in weight-related behaviours. Experimental research designs are required to determine the causality of this association. Evidence strongly suggests policy makers and public health practitioners contemplate strategies to promote positive body image and healthy weight-related behaviours among adolescents and emerging adults.

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The presence of body dissatisfaction (BD) in non-Western countries is an important area of empirical enquiry. The results reflect collectivistic and individualistic cultures of Malaysians and Australians, respectively, whereby social approval, social acceptance, and cultural values are of high importance to Malaysians compared with the more liberal attitudes of Australians with respect to health behaviours. This study sought to compare: (1) Australian and Malaysian women on BD, thin ideal internalisation, sociocultural influences, problematic weight-related behaviours, and health behaviours; and (2) the degree to which BD is associated with health behaviours (smoking, alcohol consumption, drug use, and sexual behaviours) across the two cultures. Participants were 428 Australian females and 402 Malaysian females aged 18–25 years old. Australians had higher BD, thin ideal internalisation, family and media influences, restrained eating, and poorer health behaviours, while Malaysians had higher peer influence. There was no difference for bulimic behaviours across the two countries. BD was found to have an association with use of drugs, smoking, and sexual behaviours among Malaysian women, but not for Australian participants. The permeation of Western standards of the thin ideal due to increased industrialisation, Westernisation, and modernisation has brought about bulimic behaviours in Malaysian women, similar to that of Australian women.

Investigating moderating effects of culture between body dissatisfaction (BD) and quality of life (QoL) is paramount, as BD affects psychosocial functioning. Participants include 866 females (18–25) years old from Australia ( n = 464) M (20.88) SD (3.38) and Malaysia ( n = 402) M (20.63) SD (2.05). Higher levels of BD predicted lower levels of QoL across all four domains. BD had the strongest effect on psychological QoL for both cultures. Culture moderated the relationship between BD and: (i) physical QoL and (ii) environmental QoL. The adverse impact of BD on all domains of QoL, highlights the importance of BD as a public health problem.

The disposal of solid waste has become an important issue in modern and developing countries likeMalaysia. This was a cross-sectional study using secondary data from a public survey (January-December 2011)