Body Handbook კატალოგი პროფილი რეიტინგი
დანამატები BODY HANDBOOK
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Multivitamins for Healthy Adults
You take it as insurance against an imperfect diet. That exact question got tested at a scale the supplement aisle almost never reaches: fourteen thousand men over eleven years, twenty-one thousand older adults over four. The verdict is mostly no. No fewer heart attacks, no longer life, no cancer protection that held up on a re-run. One thing survived: adults past 60 slowed their memory decline a little. For most healthy adults it's a coin you can stop flipping, and the money buys more as a single nutrient you're actually short of.
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The pill is honest about what it is. A Centrum-class tablet is thirteen vitamins and a dozen minerals, each near 100% of the daily recommendation. Small, low-dose, nothing exotic.

The prevention story failed the test. The 1980s theory was that extra antioxidants would slow cancer and heart disease. Two decades of trials looked, and it didn't hold up 1. Heart attacks and strokes: no difference 2. Cancer nudged down a little in men in one older trial that no re-run has confirmed 3. Daily users don't live longer 4.

Memory is the one real signal. In adults past 60, three cognitive substudies pooled to a small but genuine slowing of memory decline, roughly two years of preserved cognition over the trial 5. It's the strongest result the broad multivitamin has produced, and the only one that replicated.

For most people the answer is skip it. Five groups have a real gap, and their fix is one specific nutrient.

  • Vegan or strict vegetarian: B12 is almost only in animal food, and going without eventually damages nerves in ways that don't fully reverse 6. A B12 tablet covers it.
  • You menstruate: about one in ten US women of reproductive age runs low on iron 7. An iron-containing tablet closes part of the gap.
  • 60 or older: B12 absorption drops with age 6, and the memory signal landed in this band. Closer to a yes than at 35.
  • Little winter sun: vitamin D falls below the floor in about a third of adults in winter. A dedicated 1,000–2,000 IU corrects it better than the 400–800 in a blend.
  • Bariatric surgery, Crohn's, celiac, or heavy drinking: that's a blood panel and a clinician.

Two decisions settle it: whether you fit a gap above, and if so which one.

Under 60: a small chance of quietly closing a gap you didn't know you had, and almost nothing you'd notice. No sharper focus, no glow — the trials looked and found none. The lift some people feel in week one is placebo, real but not worth $40 a year.

60 and over: the same baseline, plus that modest slowing of memory decline — across a population, a meaningful number of dementia diagnoses pushed back a year or two 5. Individually it's forgetting a neighbor's name once every six weeks instead of once a month.

The fine print — when to skip it, and what people get wrong

"If a little is good, more is better." Mega-dose beta-carotene raised lung cancer in smokers 8; high-dose vitamin E raised prostate cancer 17% 9. Near-RDA tablets stay out of that range. "Multivitamins cause cancer" confuses those mega-doses with the standard tablet, which shows no such increase.

Skip iron if you're male, post-menopausal, or have hemochromatosis. Smokers: avoid beta-carotene above ~3 mg. Pregnant: a prenatal, not this. On warfarin or levothyroxine, keep the intake steady and separate the thyroid pill by four hours.

The real cost isn't the tablet — it's treating it as the work, feeling "covered," and skipping diet, sleep, and exercise. Second trap: stacking a B-complex, "immune support," and a hair gummy until fat-soluble vitamins and biotin drift too high.

References
  1. 1Bjelakovic et al. (2012). Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases. Cochrane Database of Systematic Reviews. link
  2. 2Sesso et al. (2012). Multivitamins in the prevention of cardiovascular disease in men: the Physicians' Health Study II randomized controlled trial. JAMA. link
  3. 3Gaziano et al. (2012). Multivitamins in the prevention of cancer in men: the Physicians' Health Study II randomized controlled trial. JAMA. link
  4. 4Loftfield et al. (2024). Multivitamin use and mortality risk in 3 prospective US cohorts. JAMA Network Open. link
  5. 5Vyas et al. (2024). Effect of multivitamin-mineral supplementation versus placebo on cognitive function: results from the clinic subcohort of the COcoa Supplement and Multivitamin Outcomes Study (COSMOS) and meta-analysis of 3 cognitive studies within COSMOS. American Journal of Clinical Nutrition. link
  6. 6Allen LH (2009). How common is vitamin B-12 deficiency? American Journal of Clinical Nutrition. link
  7. 7Cogswell et al. (2009). Assessment of iron deficiency in US preschool children and nonpregnant females of childbearing age: National Health and Nutrition Examination Survey 2003-2006. American Journal of Clinical Nutrition. link
  8. 8ATBC Cancer Prevention Study Group (1994). The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers. New England Journal of Medicine. link
  9. 9Klein et al. (2011). Vitamin E and the risk of prostate cancer: the Selenium and Vitamin E Cancer Prevention Trial (SELECT). JAMA. link
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