<![CDATA[Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder caused by insulin resistance or insufficient insulin production, and its global prevalence continues to rise. This review aimed to identify the behavioral factors most strongly associated with T2DM incidence among the productive-age population (15-64 years), to inform targeted prevention strategies. Methods: Literature was searched on Google Scholar (the only database used) with the keywords "type 2 diabetes," "behavior," and "risk factors," restricted to case-control and cross-sectional studies published between 2019 and 2024 examining behavioral factors associated with T2DM incidence among participants aged 15-64 years. Eight studies met the inclusion criteria and were synthesized qualitatively (narrative synthesis). Findings: Two behavioral factors emerged consistently across the eight included studies: unbalanced dietary patterns, particularly excessive carbohydrate and fat consumption, and insufficient physical activity, including prolonged sedentary behavior. These findings align with the broader international evidence base on dietary and physical activity determinants of T2DM risk. Conclusion: Public health interventions combining dietary modification with structured physical activity promotion, including digital and social-media-based strategies, represent a promising avenue for T2DM prevention specifically targeted at diet and physical activity, the two most actionable behavioral factors identified. Limitations of this review, including reliance on a single search database and the absence of formal risk-of-bias assessment, are discussed alongside recommendations for future, more methodologically comprehensive reviews.]]>
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