The Claim
Beta carotene supplementation has no significant effect on the incidence of cancers other than lung cancer in male smokers aged 50 to 69 over a period of 5 to 8 years.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Taking beta carotene supplements does not change the rate of cancers (except lung cancer) in male smokers between the ages of 50 and 69 over 5 to 8 years.
See the scientific wording
Beta carotene supplementation has no significant effect on the incidence of cancers other than lung cancer in male smokers aged 50 to 69 over 5 to 8 years.
Taking beta carotene pills does not change how often cells in the body divide or how well they fix damaged DNA, so it doesn't stop cancers from forming in organs like the prostate or colon.
What the research says
1 studyThe study found that taking beta carotene pills every day didn’t lower the risk of cancers like prostate or colon in older male smokers—it only made lung cancer and death more likely. So for other cancers, the pills didn’t help, which matches the claim.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.