This statement is profoundly true. Thyroid hormone is not just important; it is absolutely critical for normal brain development, especially during the fetal and early postnatal periods. It regulates a symphony of processes: it promotes the growth and branching of neurons (dendritic arborization), ensures neurons migrate to their correct positions in the brain's layered cortex, and is essential for the formation of myelin—the fatty sheath that insulates nerve fibers and allows for rapid signal transmission. It also supports the development of synapses, the connections between neurons. Severe deficiency during these critical windows leads to cretinism, characterized by profound intellectual disability and impaired motor skills. Even mild or subclinical deficiency has been linked to increased risks for ADHD, autism spectrum traits, and lower IQ scores.

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Zambia

• Joseph Soko – 101 pts

• Visual Pathway Lesions
• Positive and Negative Symptoms
• Hallucinations and Delusions
• Antipsychotic Medications
• Emergency: Environmental Emergencies