Do Multivitamins Help You Live Longer?
A daily multivitamin does not help healthy adults live longer. A 390,124-person study over 23.5 years and the USPSTF both found no mortality benefit for generally healthy people. The exception: multivitamins do help diagnosed deficiencies, and folic acid before and during early pregnancy prevents neural tube defects.
Understand the mortality data In 390,124 generally healthy US adults followed a median of 23.5 years, daily multivitamin use was not associated with lower mortality (an early apparent 4% higher risk was not significant in later follow-up)
This is one of the largest, longest studies on multivitamins and death risk in healthy adults, and it found no longevity benefit.
See what USPSTF concluded The US Preventive Services Task Force gave multivitamin use a Grade I (insufficient evidence) for preventing cardiovascular disease or cancer in healthy adults
The USPSTF is the standard body for preventive-medicine recommendations in the US, and it does not recommend multivitamins for this purpose in healthy adults.
Understand when vitamins do help Multivitamins and specific nutrients do help when there is a diagnosed deficiency, and folic acid taken before and in early pregnancy prevents neural tube defects; that is well established
The claim here is narrow: a daily multivitamin does not extend a healthy adult's life. It is not a claim that all vitamins are useless.
Test before you supplement Ask your doctor for a basic panel (vitamin D, B12, and iron/ferritin are common ones) and supplement the specific gap it finds, rather than taking a blanket daily multivitamin hoping it helps longevity
Testing finds the deficiency that is actually there, and treating a real gap is where supplementation earns its evidence; a blanket multivitamin does not show a longevity benefit in healthy people.
This is one of the largest, longest studies on multivitamins and death risk in healthy adults, and it found no longevity benefit.
View sources
About Folic Acid (CDC)
Multivitamin Use and Mortality Risk in 3 Prospective US Cohorts (Loftfield et al., JAMA Network Open, 2024)
Vitamin, Mineral, and Multivitamin Supplementation to Prevent Cardiovascular Disease and Cancer: US Preventive Services Task Force Recommendation Statement (JAMA, 2022)
Not medical advice. This page is for education only and is not a substitute for professional medical care. Consult a qualified clinician before changing your health routine.
Editorial disclosure. This protocol is written and fact-checked by the YourProtocol editorial team directly from the primary sources cited below; it is not written or reviewed by any outside expert.
Is this for you
- Anyone taking a daily multivitamin 'just in case'
- People wondering if multivitamins are worth it for longevity
- Anyone with a possible nutrient gap who wants the right next step
- People who are pregnant or planning pregnancy (see the folic acid exception)
Cautions
- This is about a blanket daily multivitamin in generally healthy adults, not a claim that vitamins are useless: diagnosed deficiencies and pregnancy-related folic acid are real, well-supported exceptions
- The main study is observational; it shows association, not proof of zero effect for every individual, though its size (390,124) and follow-up (23.5 years) are unusually strong for this kind of question
- This page intentionally gives no doses; talk to a doctor and test before supplementing, especially if pregnant, on medication, or managing a health condition
- Educational only, not medical advice