Problematic eating behaviors (PEB), which include both disinhibited and restrained eating, are becoming more common worldwide across various cultural groups. These behaviors can severely affect college students’ development and may lead to eating disorders, posing serious health risks. However, most current models of PEB tend to overlook cultural factors, which limits their effectiveness for diverse populations. This dissertation examines the role of culture in shaping PEB and their associated risk factors, such as perceived pressures on thinness and body dissatisfaction. Study 1 evaluates the applicability of an expanded theoretical model (i.e., the Tripartite Influence Model) in China (n = 342), Pakistan (n = 304), and the United States (n = 505). In all three countries, culturally distinct social pressures were related to PEB through body esteem, with paternal, maternal, and peer pressures being significant in the U.S., peer pressure being significant in China, and maternal pressure being significant in Pakistan (e.g., indirect effects in the U.S. for peer pressure = .07, 95% CI = .04, .10, for maternal pressure = .06, 95% CI = .03, .10, and for paternal pressure = .05, 95% CI = .02, .08; in China for peer pressure: .11, 95% CI = .04, .18; in Pakistan for maternal pressure: .12, 95% CI = .03, .20). The expanded Tripartite Influence Model can capture cultural nuances in body dissatisfaction and problematic eating behaviors: while paternal, maternal, and peer pressures all contributed among U.S. young adults, peer pressure was predominant in China and maternal pressure was most influential in Pakistan. Study 2 focuses on the culturally specific experience of acculturative stress among female students in diverse U.S. college settings, examining its unique contribution to PEB beyond theoretical covariates and relevant confounders. Acculturative stress was uniquely associated with higher PEB (β = .23, p < .001). Independent self-construal moderated this relationship (β = -.13, p = .01). When independence was higher, the strength of the association between acculturative stress and PEB was weaker. Thus, incorporating acculturative stress into traditional sociocultural tripartite factors can reveal unique associations that contribute to a more culturally relevant model of risk factors for eating pathology, while also highlighting the importance of individual differences (i.e., independent self-construal) in shaping these dynamics. Study 3 examines the experiences of international migrants, specifically female Chinese international students who experience differences in cultural norms. This study investigates the roles of cultural transition and acculturative stress in body image and PEB. At the group level, body satisfaction decreased (Mdiff. = 0.09, p = .03), self-reported BMI increased (Mdiff. = -0.65, p < .001), and emotional eating increased (Mdiff. = -0.21, p = .001), while other variables (e.g., perceived pressures on thinness) remained stable. Acculturative stress was associated with lower body satisfaction (β = -.14, p = .03) and higher uncontrolled eating (β = .17, p = .02) six months post-arrival, even after accounting for pre-migration levels. Changes in perceived pressure on thinness were indirectly linked to changes in overall problematic eating through changes in body satisfaction (indirect effect = .10, 95% CI = .02, .20). Therefore, cultural transitions and acculturative stress are linked to concerns related to eating behaviors, making these factors particularly critical to consider in the context of increasing globalization and international migrant health. This dissertation highlights the importance of culturally attuned frameworks in PEB research to advance health equity. By uncovering how unique sociocultural pressures shape PEB across populations, it advocates for inclusive, culturally responsive interventions that address the needs of diverse communities globally.