Is hypothyroidism an independent risk factor for dementia?

The risk is elevated in the elderly with underactive thyroid, particularly if they are taking medication for the disorder, a large study finds
Sarah Simpkins
Hypothyroidism

Elderly people with a history of hypothyroidism are 81% more likely to develop dementia compared with those without thyroid disorder, research has shown.

A population-based case-control study shows previous diagnosis of underactive thyroid is significantly linked to later dementia after accounting for other risk factors, such as hypertension, heart disease and depression.