Serum magnesium level is associated with cognitive function among the elderly in Palestine, a cross-sectional study

Cognitive health in the elderly is linked to modifiable factors, including nutrition-related elements such as obesity, eating habits, and micronutrient deficiencies. The purpose of this study is to determine the association between serum magnesium levels and cognitive function among Palestinian elderly. A total of 200 older adults were included in the study (36.5% men and 63.5% women); the mean age was 64.6 ± 3.3 years. The mean cognitive function, as measured by the MoCA score, was 24.5 ± 3.66, whereas the average scores were 5.4 ± 1.19 for ADL and 6.2 ± 3.2 for IADL. The results indicated a substantial correlation between serum magnesium levels, IADL, smoking status, and cognitive performance. Sociodemographic characteristics, sleep quality, physical activity, body mass index, malnutrition, and adherence to the Mediterranean diet exhibited no significant correlation with serum magnesium levels. To conclude, serum magnesium levels were associated with smoking, cognitive function, and instrumental activities of daily living (IADL). Magnesium did not significantly correlate with Activities of Daily Living (ADL). These associations should be interpreted cautiously, as cognitive function is influenced by multiple additional factors not captured in this study.