Three critical findings are reshaping how medical professionals should approach magnesium assessment in clinical practice. First, standard blood tests measure less than 1% of the body’s magnesium stores, primarily missing the 98% stored in bones and cells. Second, clinical risk factors including kidney function, proton pump inhibitor use, diuretic therapy, and alcohol consumption are superior predictors of magnesium-related health complications compared to serum levels. Third, nearly half of adults may have functional deficiency despite normal laboratory results.
These revelations suggest that clinicians should place greater emphasis on patient history and risk factor assessment rather than relying solely on serum magnesium values. The research indicates that a normal blood magnesium level rules out severe clinical deficiency but cannot confirm adequate body stores.
Healthcare providers may need to consider clinical depletion scoring systems and evaluate patients’ overall risk profile when assessing magnesium status and making supplementation decisions.
Read the full article on GMJ Newsroom.
