Subclinical thyroid dysfunction 'not linked' to cognitive decline

Researchers say screening with the aim of reducing dementia risk is unwarranted

Subclinical thyroid dysfunction does not appear to be linked to cognitive decline, according to a large study.

blood vial for thyroid function test

The finding calls into question the practice of screening for subclinical thyroid dysfunction intended to avert cognitive decline or dementia, the Dutch-led researchers say.

They evaluated cross-sectional and longitudinal associations between baseline thyroid dysfunction and cognitive function and dementia using individual patient data from 23 cohorts including

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