What happen if your TSH hormone is very very low?

See a doctor. A 'very very low' level of TSH indicates a significantly over-active thyroid gland (assuming you are not taking thyroid replacement.) this is a significant health risk, you need to see an endocriniologist or good internal med doctor. If you have low TSH and are taking thyroid hormone replacement, you may be taking too much.

Related Questions

Could you tell me what happen when your TSH hormone is very very low?

Three possibilities. 1) either your pituitary is defective and unable to make TSH or not being asked to by your brain due to a problem w/the thyroid thermostat --- or, 2) your thyroid is making too much thyroid hormone and there's a natural suppression of TSH secretion. You could also be taking too much thyroid replacement medication. Read more...