A new study has found that a daily multivitamin can slightly halt the aging process, although not by a significant amount. The study, which followed over 21,000 adults for two years, found that people who took a multivivitamin showed small improvements in two biological indicators associated with aging over 1.4 to 2.6 months compared to people taking a placebo. The researchers believe this could indicate that an over-the-clock supplement can extend your life. However, caution remains that the study only focused on people over 70 and it's unclear whether the same effect would be noticeable in a younger person.