Hyperthyroidism The global prevalence of overt hyperthyroidism is between 0.2% to 1%. Graves disease is the most common form of hyperthyroidism in most areas of the world but there are other causes including toxic nodular goitre. Complications of hyperthyroidism are common - from bone loss to atrial fibrillation to heart failure.  So it is important that we get the diagnosis and management of this condition right. To find out more about this problem and what we can do about it, please do listen to his podcast interview with Dr Salman Razvi, Consultant Endocrinologist and Senior Lecturer at Queen Elizabeth Hospital, Gateshead. Competing interests: SR has received speaker fees from Merck, IBSA and Abbott Pharmaceuticals Ltd and research funding from Merck.