Which symptom profile is more typical of hyperthyroidism than hypothyroidism?

• A. Fatigue and weight gain
• B. Weight gain and cold intolerance
• C. Weight loss and heat intolerance
• D. Bradycardia and constipation

Answer: (C)

Hyperthyroidism speeds up the body's metabolism, causing more heat production and quicker energy use. That leads to weight loss and heat intolerance because the body burns energy and feels hot more easily. These features contrast with hypothyroidism, where metabolism slows and people typically gain weight and feel cold. The other options describe hypothyroid patterns such as fatigue with weight gain, or bradycardia with constipation, which align with a slower metabolic state rather than the hypermetabolic state. So, weight loss with heat intolerance is the hallmark profile for hyperthyroidism compared with hypothyroidism.