Is it possible to be hyperthyroid or is it always hypo?

I very rarely see anyone with hyperthyroidism. People I work with usually have subclinical hypothyroidism or clinical hypothyroidism. Or they have what appears to be normal thyroid function, but it’s usually not optimal.

The only time I see hyperthyroidism is if someone is taking thyroid medication and they start taking iodine and selenium. And then they start experiencing hyperthyroidism at that point.

But then they just need to reduce the dosage of their thyroid medication.