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Background: Immigrants to the United States, on average, accumulate cardiovascular risk after resettlement, including obesity. There is a need to co-create interventions to address these disparities, and mood may be an important mediating factor., Methods: The Healthy Immigrant Community (HIC) study, set in southeast Minnesota, enrolled 475 adult participants in a weight loss intervention to reduce cardiovascular risk. Baseline questionnaires assessed mood, nutrition, physical activity, self-efficacy for healthy eating and physical activity, social support, and cohesion. A single-item mood rating of poor or fair was considered "negative", while ratings of good, very good, or excellent were considered "positive"., Results: A total of 449 HIC participants (268 Hispanic/Latino and 181 Somali) with complete baseline measures and were included in this analysis. Participants endorsing negative mood compared to those endorsing positive mood had lower scores for healthy eating ( p = 0.02) and physical activity levels ( p = 0.03), lower confidence in eating a healthy diet ( p = 0.001), and felt less of a sense of belonging to their community ( p = 0.01). Those endorsing negative mood also reported receiving less social support from their family and friends to eat healthy ( p = < 0.001) and be physically active ( p = 0.01), and less often accessed community resources for healthy eating ( p = 0.001) and physical activity (p = < 0.01) compared to participants reporting positive mood., Conclusions: Negative mood was associated with less healthy nutrition, lower confidence in eating healthy, sedentary lifestyle, and perceived lack of belonging to the community. Integrating mood management and self-efficacy strategies may enhance the effectiveness of lifestyle interventions among immigrants who report negative mood., Clinicaltrialsgov Registration: NCT05136339; April 23, 2022., Competing Interests: Competing Interests: Author M. Clark declares IP on the Pheno-Diet: Individualized Lifestyle Intervention for Obesity Management Based on Obesity Phenotypes. No other authors have competing interests to declare.