Introduction
Magnesium is the second most abundant intracellular cation in the human body, and it is an essential mineral involved as a cofactor in over 600 enzymatic reactions [Nutritional epidemiologic studies have traditionally utilized self-reported dietary intake in research to study the relationship between diet and health outcomes. Assessment methods, including food frequency questionnaires (FFQs), food records and 24-h recall are commonly used for assessing dietary intake [The objective of the current study was to assess associations among blood iMg