Guideline / position statementcited by the Tayebat archiveabstract only checked★ key study A-SUP-30 in-depth review
USPSTF 2022: vitamins for prevention
Vitamin, Mineral, and Multivitamin Supplementation to Prevent Cardiovascular Disease and Cancer: US Preventive Services Task Force Recommendation Statement.
Overview
US Preventive Services Task Force et al.. JAMA 2022 · PMID 35727271 · DOI 10.1001/jama.2022.8970
Recommends against beta-carotene and vitamin E; evidence insufficient for most others.
Does the study support the specific claim? Yes · Methodological quality: high
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Prevention guidance.
- How was the study done?
Guideline.
- What was actually found?
D for beta-carotene, vitamin E; I for others.
- What do the results mean in everyday life?
Don't take for prevention.
- What are the study's limitations?
Not for pregnancy/deficiency.
- What does it say about Elawady's specific claim?
Supports.
- Do the results apply to Germany and Europe?
Applicable.
- What can explicitly not be concluded from this study?
Advice on deficiency or pregnancy.
Scientific in-depth review
1. Full reference
- Authors
- US Preventive Services Task Force, Mangione CM, Barry MJ, Nicholson WK, Cabana M, Chelmow D, Coker TR, Davis EM, Donahue KE, Doubeni CA, Jaén CR, Kubik M, Li L, Ogedegbe G, Pbert L, Ruiz JM, Stevermer J, Wong JB
- Journal
- JAMA
- Year
- 2022
- Identifier
- PMID 35727271 DOI 10.1001/jama.2022.8970
- Verification
- verified – PubMed E-utilities efetch, 2026-10-25
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
not stated in abstract
2. Research question
Supplementation for prevention of CVD and cancer in community-dwelling non-pregnant adults
3. Study design and population
- Study design
- Guideline / position statement – Recommendation statement based on a commissioned systematic review
- Population
Community-dwelling, non-pregnant adults
- Country
USA
- Period
2022
- Inclusion and exclusion criteria
see abstract
4. Methods and endpoints
- Exposure / intervention
Single nutrients, pairs, multivitamins
- Endpoints
CVD, cancer, mortality, harms
- Statistical methods
USPSTF certainty grading
5. Actual results
- Results
Beta-carotene: harms outweigh benefits (moderate certainty, D); vitamin E: no net benefit (moderate certainty, D); multivitamins and other single/paired nutrients: insufficient evidence (I).
- Absolute risks
not reported in abstract
- Authors' conclusion
Recommends against beta-carotene or vitamin E for CVD/cancer prevention; insufficient evidence for others.
6. Strengths
- Systematic, transparent
7. Weaknesses
- Excludes pregnancy and deficiency
8. Risk of bias
- Orienting tool
- none applicable
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- low
- Rationale
Guideline based on systematic review.
9. Assessment of the statistical interpretation
See results.
10. Relevance to the specific claim
C-SUP-02; C-SUP-03; C-SUP-01; C-SUP-10 (scope limit).
11. Independent contrary findings
Scope excludes pregnancy and deficiency.
12. Transferability to Germany and Europe
High: biology and trial populations comparable to European adults.
13. Overall methodological judgement
Authoritative.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | high |
| Risk of bias | low |
| Precision of results | not applicable |
| Directness | direct |
| Reproducibility | replicated |
| Consistency with the overall evidence | consistent |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | correctly reported |
14. Open questions
15. Linked fact checks
- When popular oral supplements (calcium, beta-carotene, vitamin E, omega-3, multivitamins, glucosamine, selenium, vitamin A) were tested in large long-term placebo-controlled trials, most failed to deliver the promised prevention of disease. – Studies supporting the claim
- Beta-carotene supplements (with or without vitamin A) increased lung cancer and mortality in smokers and asbestos-exposed workers (CARET, ATBC), and the USPSTF recommends against them. – Studies supporting the claim
- High-dose vitamin E (400 IU/day) increases prostate cancer (SELECT, +17%) and may increase all-cause mortality (Miller 2005: +39 per 10,000). – Studies supporting the claim
- No one needs vitamins or supplements: 'there is no such thing as dietary supplements', the body makes its own vitamins, and vitamins are on the forbidden list. – Studies supporting the claim
Use by the Tayebat archive
Note: according to the archive, the studies were compiled by the archive operators. Whether Dr. Elawady himself cited this study is not established.
- What the archive says about the study
USPSTF 2022 recommends against beta-carotene and vitamin E for prevention (D).
- A. What was actually studied?
Supplements for CVD/cancer prevention.
- B. What did the authors find?
D for beta-carotene, vitamin E; I for others.
- C. What conclusions do the authors themselves draw?
Same.
- D. What does the archive derive from it?
Used to show that 'when tested rigorously they fail or hurt'.
- E. Is this derivation scientifically justified?
Correct for beta-carotene and vitamin E; the 'I' statements mean evidence is insufficient, not that supplements are harmful; and the statement excludes pregnant people and deficiency.
- Adequacy of the interpretation (by the archive)
- correctly reported