What is a primary symptom of hypothyroidism?

• A. Weight loss
• B. Increased sensitivity to heat
• C. Fatigue or lethargy
• D. Heightened energy levels

Answer: (C)

Fatigue or lethargy is a primary symptom of hypothyroidism due to the body's slowed metabolism. When the thyroid gland does not produce enough thyroid hormones, various bodily functions slow down, leading to decreased energy production and an overall feeling of tiredness. People with hypothyroidism often report feeling unusually fatigued despite getting enough rest, which can significantly impact their daily activities and quality of life. This symptom is a direct result of the reduced metabolism and energy levels associated with low thyroid hormone levels, making it a key indicator for the condition. Understanding this can help individuals recognize the signs of hypothyroidism and seek appropriate medical evaluation and treatment.