The effect of too much iron on heart disease has been debated by researchers for years. Many studies have shown that people with very high levels of iron in their blood are at increased risk of heart problems. High levels of iron reduces the normal vessel dialation. Doctors recommended controlling iron consumption can revert the symptoms. Postmenopausal women, whose iron levels are no longer being depleted by mensturation, should consult their doctors before taking a multivitamin that contains iron.