This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid, Subject name: Medicine
All are true about Hyperthyroidism EXCEPT: 
Select and explain. 
A. Anxiety, B. Palpitations, C. Tachycardia, D. Weight gain
D: Weight gain
Answer: D: Weight gain 
Explanation: Ans. (d) Weight gainRef.: Harrison 19th ed. /152* T3 and T4 have sympatho-mimetic activity and they affect basal metabolic rate. Hence in thyrotoxicosis the increase in BMR will lead to weight loss. The sympatho- mimetic activity leads to anxiety palpitations and tachycardia.