Type 2 diabetes (T2D) presents growing public health challenges due to its strong links to modifiable behaviors. This systematic review examined how researchers have studied behavioral domains such as diet, physical activity, medication adherence, and blood glucose monitoring in adults with T2D. A structured search of PubMed, Scopus, and Web of Science identified peer-reviewed studies published between 2003 and 2025, with studies from 2014 onward prioritized to reflect the rise in mobile health technologies. 30 core studies were systematically reviewed, with 10 additional comparative studies included for supplementary methodological insights. Quantitative approaches were most common, offering measurable outcomes but often relying on self-report. Qualitative studies provided valuable cultural and psychosocial context yet lacked generalizability. Mixed-methods designs integrated statistical and narrative insights but posed practical challenges in execution. Technology-assisted methods, such as mobile applications and wearable devices, supported real-time monitoring and improved accuracy but raised concerns regarding privacy and equitable access. Physical activity and dietary behaviors were most frequently studied, while medication adherence and glucose monitoring received less consistent attention. Despite methodological diversity, most studies relied on cross-sectional designs and underutilized culturally tailored frameworks. This review emphasizes the need for longitudinal, equity-focused research methodologies to improve diabetes prevention and management strategies.
Khandoker et al. (Tue,) studied this question.
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