Overall, among the entire group, at the end up one year,
weight was up by 3.95 (
kg 8 3/4 pounds), to 9.91
kg (22 pounds) after 4 years, with a mean weight gain of approximately 3.66 kg (8 pounds) per year." - Dale, J., Daykin, J., Holder, R., Sheppard, M. C. & Franklyn, J. A. "Weight gain following treatment of hyperthyroidism," Clinical Endocrinology , 55 (2), 233-239.