Borderline low hemoglobin levels, usually considered normal, linked to a higher risk of death

A prospective cohort study published in *Annals of Internal Medicine* reports that adults with hemoglobin levels 1 to 3 g/dL above World Health Organization (WHO) anemia thresholds experienced lower mortality compared to individuals with levels below the diagnostic cutoff or significantly higher than this range. The research identifies a distinct mortality advantage for patients within this specific hemoglobin window relative to both those classified as anemic and those with substantially