Multivitamin/mineral supplements … people expect this type of supplement to improve their health. However, the efficacy of these supplements to prevent chronic disease or premature death is not proven, and the National Institutes of Health do not recommend multivitamin/mineral supplements for this purpose …. in the current study, there was no clear decrease or increase in mortality from all causes, cardiovascular diseases, or cancer among multivitamin supplement users. Moreover, the risk of morbidity from overall or major cancers did not differ between multivitamin users and nonusers