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Related Concept Videos

Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

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Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...
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Graves' Disease I: Introduction01:28

Graves' Disease I: Introduction

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Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence...
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Hyperthyroidism II: Pathophysiology01:27

Hyperthyroidism II: Pathophysiology

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Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH...
26
Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

26
Graves’ disease is an autoimmune disorder characterized by the production of thyroid-stimulating immunoglobulins (TSI) that activate TSH receptors, leading to excessive synthesis and release of thyroid hormones (T3 and T4) and resulting in hyperthyroidism.Among all causes of hyperthyroidism, Graves’ disease is the most common and can happen at any age, though it is more frequent in women. It produces a hypermetabolic state with features such as weight loss, tachycardia, tremor,...
26
Hyperthyroidism I: Introduction01:25

Hyperthyroidism I: Introduction

29
Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...
29
Language and Cognition01:27

Language and Cognition

874
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
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Related Experiment Video

Updated: Apr 28, 2026

Author Spotlight: Accurately Assessing Thyroid Hormone-Driven Motor Alterations in Mouse
04:05

Author Spotlight: Accurately Assessing Thyroid Hormone-Driven Motor Alterations in Mouse

Published on: October 6, 2023

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Thyroid disease and cognition.

Mary H Samuels1

  • 1Division of Endocrinology, Diabetes, and Clinical Nutrition, Oregon Health & Science University, 3181 Southwest Sam Jackson Park Road, Portland, OR 97239, USA.

Endocrinology and Metabolism Clinics of North America
|June 4, 2014
PubMed
Summary
This summary is machine-generated.

Overt thyroid disease significantly impacts mood and cognition, with improvement upon treatment. Subclinical thyroid conditions may cause subtle cognitive deficits, but major issues suggest separate diagnoses requiring distinct evaluation and treatment.

Keywords:
CognitionHypothyroidismMoodSubclinical hypothyroidismSubclinical thyrotoxicosisThyrotoxicosis

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Area of Science:

  • Endocrinology
  • Neuropsychology
  • Thyroid Disease

Background:

  • Overt hypothyroidism and thyrotoxicosis are linked to notable mood and cognitive impairments.
  • Therapeutic interventions typically alleviate these overt symptoms.

Purpose of the Study:

  • To differentiate the cognitive and mood effects of overt versus subclinical thyroid dysfunction.
  • To clarify the clinical significance of cognitive changes in subclinical thyroid disease.

Main Methods:

  • Review of existing literature on thyroid disease and its impact on mood and cognition.
  • Analysis of symptom presentation in overt and subclinical thyroid conditions.

Main Results:

  • Overt thyroid dysfunction markedly affects mood and cognition.
  • Subclinical thyroid disease is not typically associated with major affective or cognitive dysfunction.
  • Subtle deficits in working memory and executive function may occur in subclinical states but are usually minor.

Conclusions:

  • Significant mood or cognitive distress in mild thyroid disease likely indicates independent, co-existing conditions.
  • Separate evaluation and treatment are recommended for unrelated mood and cognitive issues in patients with mild thyroid disease.