Excess stored iron can lead to health complications including insulin resistance and cardiometabolic problems. Excess stored iron may also be removed through blood donations. Researchers in Spain randomized 89 overweight (BMI>25 kg/m2) and hypercholesterolemic (190 mg/dL) but otherwise healthily blood donors with normal iron stores (median age, 55 years; 34% female) to a standard whole blood donation (n=45; 450 mL…