The Claim
In older Chinese adults, higher selenium status measured by whole blood is associated with a significantly reduced risk of hypothyroidism, with individuals in the highest quartile showing an 86% lower odds of hypothyroidism compared to those in the lowest quartile after adjusting for covariates.
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.
Older Chinese adults with higher selenium levels in their blood have a lower chance of developing hypothyroidism compared to those with the lowest selenium levels.
See the scientific wording
In older Chinese adults, higher selenium status measured by whole blood is associated with a significantly reduced risk of hypothyroidism, with individuals in the highest quartile showing an 86% lower odds of hypothyroidism compared to those in the lowest quartile after adjusting for covariates.
Selenium in the blood is used to make enzymes that convert the main thyroid hormone into its active form, which tells the brain to stop producing the signal that stimulates the thyroid. At the same time, selenium makes antioxidants that clean up harmful chemicals produced during hormone creation, preventing damage to thyroid cells and stopping immune attacks that can shut down the gland.
What the research says
1 studyStudy: Selenium Status Associates with Thyroid Hormone and Thyroid Dysfunction in Older Chinese Adults
Older Chinese adults with more selenium in their blood were much less likely to have an underactive thyroid, according to this study. It doesn't prove selenium fixes the problem, but it shows a strong link between high selenium and lower risk.
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.