A person with hyperthyroidism would be expected to have an abnormally high BMR?

True.

Hyperthyroidism is a condition in which the thyroid gland produces too much thyroid hormone. Thyroid hormone controls the body's metabolism, so people with hyperthyroidism have an abnormally high metabolic rate (BMR). This can lead to a number of symptoms, including weight loss, increased heart rate, sweating, and nervousness.