Hypothyroidism: A Review

Area of Science:

• Endocrinology
• Internal Medicine

Background:

• Hypothyroidism is a common endocrine disorder characterized by insufficient thyroid hormone production.
• Its prevalence varies globally, influenced by factors like iodine intake, and it disproportionately affects women and older adults.
• Untreated hypothyroidism can lead to severe health issues, including heart failure and myxedema coma.

Purpose of the Study:

• To provide a comprehensive overview of hypothyroidism, covering its causes, symptoms, diagnosis, and treatment.
• To highlight the importance of timely diagnosis and appropriate management to mitigate health risks.

Main Methods:

• Review of current medical literature on hypothyroidism.
• Analysis of prevalence, risk factors, clinical manifestations, diagnostic criteria, and treatment guidelines.

Main Results:

• Hashimoto thyroiditis is the leading cause of primary hypothyroidism in iodine-sufficient regions.
• Common symptoms include fatigue, weight gain, cognitive difficulties, and menstrual irregularities.
• Biochemical diagnosis relies on elevated thyrotropin (TSH) and low free thyroxine (T4) levels.

Conclusions:

• Hypothyroidism presents with diverse symptoms and can lead to significant cardiovascular and reproductive health complications.
• Levothyroxine is the standard first-line treatment, requiring individualized dosing and regular monitoring.
• Effective management normalizes TSH levels, alleviates symptoms, and prevents serious long-term health consequences.