 Meanwhile, further information on any preliminary observations is expected to be released soon. Tom Rivers, ABC News, at the Foreign Desk. A new study finding that taking daily multivitamins may not do much good for people who are otherwise healthy. The National Institutes of Health studied about 400,000 people and found multivitamin use did not reduce their risk of death from conditions like heart disease and cancer. The study did not examine people with vitamin deficiencies, however.