If you have ever stood in a pharmacy aisle wondering whether the multivitamin in your hand is doing anything besides making your urine bright yellow, you have already absorbed the headline version of the debate.
The Claim Being Investigated
The "multivitamins are a waste of money" claim has crystallized in three forms across Reddit, X health threads, and major-outlet science journalism. First: "Healthy adults don't need them; you get everything from food." Second: "Even USPSTF says don't bother." Third, the snappier version: "Multivitamins are expensive urine." The framing usually appears alongside a screenshot of a 2022 JAMA editorial or a Johns Hopkins Health Review article and treats the message as settled.
The claim is partly accurate, partly imprecise. It is true that the USPSTF, the most rigorous independent body that issues preventive-medicine guidance in the United States, looked at multivitamins for cancer and cardiovascular disease prevention in 2022 and concluded the evidence was insufficient. It is also true that beta-carotene and vitamin E, when taken as isolated supplements at the doses tested, were graded as harmful enough to recommend against. What gets lost in the social-media compression is the actual scope of the recommendation (cancer and CVD prevention in healthy non-pregnant adults), the populations that were not in scope (older adults already showing micronutrient gaps, people with specific deficits, pregnancy, pediatrics), and the major positive trial that landed the same year and complicated the picture: COSMOS. The real question isn't "do multivitamins work", it's "for whom, for what outcome, at what effect size."
The Evidence Honestly Reviewed
The USPSTF 2022 statement is the cleanest starting point because it is a structured, transparent grading of the available evidence at that moment. The Task Force assigned a Grade I (insufficient evidence to recommend for or against) to multivitamin and most single or paired vitamin supplements for the prevention of cardiovascular disease or cancer in community-dwelling, non-pregnant adults. A Grade I is not a thumbs-down. It means the trials were either too few, too short, or too inconsistent to conclude benefit or harm. The Task Force separately gave a Grade D (recommend against) to beta-carotene for the prevention of CVD or cancer, citing increased lung cancer risk in smokers from the CARET and ATBC trials, and a Grade D to vitamin E, based on null efficacy plus small signals of harm at the doses studied (Mangione et al., JAMA 2022).
That is the strict reading. Now the trial-level evidence the Task Force was working from. The Physicians' Health Study II (Gaziano et al., JAMA 2012) randomized about 14,600 male physicians aged 50 and older to a daily Centrum Silver or placebo and followed them roughly 11 years. The multivitamin arm showed a statistically significant 8 percent relative reduction in total cancer (hazard ratio 0.92, 95 percent CI 0.86 to 0.998). That's a real but modest signal, and it was limited to men. The companion publication on CVD outcomes was null.
The trial that complicates the "expensive urine" framing landed late 2022, after the USPSTF statement was already drafted. COSMOS (Sesso et al., Am J Clin Nutr 2022) randomized 21,442 older adults (mean age 65 plus, both sexes) to a daily multivitamin (Centrum Silver), cocoa extract, both, or placebo for a median 3.6 years. The pre-specified primary endpoint of major cardiovascular events was null. But in secondary analyses, the multivitamin arm showed a roughly 7 to 8 percent reduction in all-cause mortality in the older subgroup, with confidence intervals that excluded the null. The companion cognitive trial, COSMOS-Mind (Yeh et al. 2023), looked at episodic memory and executive function over three years in the same cohort and found multivitamin supplementation slowed measured cognitive aging by an estimated two years, which is a meaningful effect at the population level if it replicates.
VITAL (Manson et al., NEJM 2019) is sometimes cited in this debate but technically tested vitamin D alone (2,000 IU per day) and omega-3 fish oil, not a multivitamin. VITAL was null on its primary cardiovascular and cancer composite endpoints, with a few intriguing secondary signals.
The synthesis a careful clinician arrives at: in healthy younger or middle-aged adults eating reasonably well, RCT evidence for a multivitamin moving hard outcomes is weak to absent. In older adults, particularly those over 65, the COSMOS and COSMOS-Mind signals on mortality and cognition are not nothing. They are not certainty either. Both effect sizes are modest, both need independent replication, and neither has changed any specialty-society guideline yet. The American Heart Association and the Endocrine Society still recommend obtaining nutrients from food first. The American Academy of Family Physicians follows USPSTF on broad multivitamin recommendations. None of these bodies say "everyone over 65 should take a multivitamin", and none say "no one should." That is exactly the state of the evidence.
The Verdict
The honest verdict is "depends on who", and that is not a hedge. It is the actual answer.
Healthy adult, age 20 to 64, varied omnivorous Western diet, no diagnosed deficits, no chronic GI absorption issue: a daily multivitamin is unlikely to change any outcome you would notice over a decade. The USPSTF Grade I applies most strongly here. If you take one because it gives you peace of mind and the cost is trivial, it is unlikely to harm you, with the explicit exception of stand-alone beta-carotene or high-dose vitamin E (USPSTF Grade D, recommend against). The "expensive urine" line is closest to true for this group.
Adult over 65, mixed diet, particularly female: the COSMOS and COSMOS-Mind signals make a daily standard multivitamin (Centrum Silver was the trial formulation) a reasonable consumer choice. The effect size is modest. The trial replication is partial. But the downside is small at the doses studied, and the population studied was a generally healthy older cohort, not nursing-home frail. The standard of care from your primary-care clinician is not "everyone over 65 needs a multivitamin". It is "if you choose to take one, the COSMOS signal supports it, and we should still address diet and any measured gaps."
Selective deficit populations: people following a strict vegan diet (B12, sometimes iron, sometimes iodine, sometimes long-chain omega-3), post-bariatric surgery patients (multiple), inflammatory bowel disease patients in flare (iron, vitamin D, B12), alcohol use disorder (thiamine, folate), and chronic PPI users (B12, magnesium) all need targeted supplementation, not a broad multivitamin. The targeted approach treats the actual gap; the broad multivitamin underdoses the deficit and overdoses the rest.
Pregnancy: a prenatal-specific multivitamin with folate, iron, iodine, and choline is standard of care, not an adult multivitamin. Pediatrics: picky-eater children may benefit from a children's multivitamin per AAP guidance, but this is a pediatrician conversation. Long-term inadequate intake from chronic illness, poverty, or appetite loss: a standard adult multivitamin as nutritional insurance is reasonable.
Multivitamins do not cure deficiency. They help close gaps when gaps exist. That distinction matters.
What Works Instead
For most adults under 65 who care about long-term health outcomes, the leverage is not in a multivitamin bottle. It is in three places, all with real evidence behind them.
First, dietary adequacy from varied whole foods. This is the framing the American Heart Association, Dietary Guidelines for Americans, and every major specialty society leads with. A weekly pattern that includes leafy greens, cruciferous vegetables, two servings of fatty fish, legumes, whole grains, nuts, fruit, and modest dairy will deliver the RDA of every nutrient a standard adult multivitamin contains, with fiber, polyphenols, and food-matrix synergies the pill cannot replicate. Think of it like buying kitchen tools. A multivitamin is a Swiss-army knife. A varied diet is the full set of proper knives. The Swiss-army knife is fine in a pinch.
Second, targeted single supplements where a measured gap exists. This is the standard-of-care framing your primary-care clinician will use. The five most common evidence-backed targeted supplements in US adults:
- Vitamin D3 at 1,000 to 2,000 IU per day if your 25-hydroxyvitamin D level is below the lab's reference range, or if you have minimal sun exposure year-round at northern latitudes. The Endocrine Society and IOM differ on cutoffs; ask for the test.
- Vitamin B12 if you are over 50 (atrophic gastritis reduces absorption), strictly vegan, or on long-term metformin or a PPI. Serum B12 plus methylmalonic acid is the right workup.
- Iron if you are menstruating with heavy periods, pregnant, or have a documented low ferritin. Iron without indication causes constipation and, at sustained excess, oxidative load.
- Omega-3 EPA + DHA at 1 to 2 grams per day if you eat fewer than two servings of fatty fish per week. The cardiovascular benefit in adequately-fed populations is modest, but the dietary gap in US adults is real per NHANES.
- Magnesium if you are in the ~50 percent of US adults below the EAR per NHANES, particularly older adults on diuretics or PPIs. Magnesium glycinate or citrate, 200 to 400 mg.
Third, the USPSTF Grade A and Grade B preventive services. These are the interventions with the strongest evidence base in adult preventive medicine, and almost none of them involve supplements. Blood pressure screening, lipid screening, colorectal cancer screening, smoking-cessation counseling, age-appropriate cancer screening, and immunizations carry effect sizes that dwarf any multivitamin trial. If you have time and energy for one health investment this year, the screening list is where it goes.
That is the standard of care. Supplements are a layer on top, not a substitute.
FAQ + Conclusion
Does a multivitamin replace eating vegetables? No. A multivitamin delivers isolated micronutrients at the RDA. It does not deliver fiber, polyphenols, the food matrix, or the synergistic effects of whole foods on cardiovascular and metabolic outcomes. The trial evidence consistently shows diet quality outperforms isolated supplementation for hard outcomes.
Are some multivitamin ingredients actively harmful? A few, at the doses tested. The USPSTF gives beta-carotene a Grade D recommendation because of increased lung cancer risk in smokers in CARET and ATBC. High-dose vitamin E (400 IU plus) showed null efficacy and small mortality signals; USPSTF Grade D. Most standard multivitamins keep these at conservative doses. Skip stand-alone beta-carotene or high-dose vitamin E supplements.
If I am over 65, should I take Centrum Silver? It is a reasonable consumer decision, not a clinical mandate. COSMOS used Centrum Silver and reported a roughly 7 to 8 percent reduction in all-cause mortality and a meaningful slowing of cognitive aging in the multivitamin arm. The signal needs replication, but at the dose studied and the population studied, the downside is small.
What about gummy multivitamins? They tend to underdose iron and several minerals because the gummy matrix limits what fits in a serving. If you choose a multivitamin, a standard adult tablet generally matches the trial formulations better than a gummy.
Are third-party tested brands worth the premium? For multivitamins specifically, USP Verified, NSF Certified for Sport, or ConsumerLab-approved status provides assurance that what's on the label is in the bottle. For more on how we evaluate brand quality, see our supplement review methodology.
Conclusion: the bottom line on whether multivitamins are a waste of money
Are multivitamins a waste of money? For a healthy adult under 65 on a varied Western diet, mostly yes; the trial evidence for hard outcomes is weak, and the USPSTF Grade I means the Task Force could not justify a recommendation either way. For adults over 65, the COSMOS and COSMOS-Mind signals on mortality and cognition make a standard multivitamin a reasonable, modest-evidence consumer choice. For people with measured deficits, targeted single supplements outperform a broad multivitamin. Beta-carotene and high-dose vitamin E supplements should be skipped per USPSTF Grade D. Standard of care for long-term health remains a varied diet, screening per USPSTF Grade A and B recommendations, and clinician-guided treatment of any diagnosed condition. A multivitamin is at most a small layer on top of that.
Next steps:
- If you eat a varied diet and are under 65, redirect the multivitamin budget toward more vegetables, fish, or a screening test that is due.
- If you suspect a specific gap (B12 if vegan, vitamin D if no sun, iron if heavy periods), ask your clinician for the relevant lab and supplement the measured gap rather than guess broadly.
- For a curated short list of well-formulated standalone supplements, see our supplement starter kit on Amazon and our under-twenty-dollar supplement picks.
This article is for informational purposes and not medical advice. Multivitamins and individual supplements can interact with medications and health conditions. Consult a licensed physician before starting any supplement, particularly if you are pregnant, nursing, taking prescription medications, or managing a chronic condition.
Reviewed by Michael Ward, MD MPH, Preventive Medicine, focused on guideline-based chronic disease management.
