Impact of Physical Activity and Dietary Habits on Mental Well-Being in Patients with Diabetes Mellitus

<b>Background</b>: The prevalence of diabetes mellitus (DM) is increasing worldwide, and mental health problems such as depression, anxiety, and diabetes distress are common co-morbidities that negatively impact the quality of life, complications, and treatment outcomes of patients with DM. <b>Objectives</b>: In this study, we assessed the impact of dietary patterns and physical activity on the well-being of patients with DM. <b>Methods</b>: A cross-sectional design and data from the European Health Interview Survey (EHIS) data collected in Hungary in 2019, and determination of the relationship between dietary habits and physical activity-related variables contained in the data and the World Health Organization-Five Well-Being Index (WHO-5 index) by suitable statistical methods. <b>Results</b>: Logistic regression showed higher odds of poor mental well-being in females (OR = 1.61, 95% CI: 1.08-2.42) and lower odds with daily fruit intake (OR = 0.52, 95% CI: 0.31-0.89). Infrequent white meat (OR = 3.34, 95% CI: 1.35-8.22) and dairy intake (OR = 1.60, 95% CI: 1.18-2.64) were associated with poorer well-being. Walking 4-7 days/week reduced the odds by 57% (OR = 0.43, 95% CI: 0.23-0.83). <b>Conclusions</b>: The results demonstrate that regular exercise and the consumption of fruits, dairy products, and white meat have beneficial effects on the mental well-being of patients with DM.