Can someone tell me exactly wht the thyroid does and how it works and wht the symptoms 2 it being very low are including seizures drinking lot of h2o?

Thyroid gland: Makes thyroid hormone which helps regulate metabolism. Patients with low thyroid hormones tend to feel cold, gain weight, are tired, may be constipated, hoarse or weak. However, the presence of seizures and drinking a lot of water raises the possibility of a problem in or around the pituitary gland at the base of the skull. Bloodwork measuring TSH as well as thyroid hormone could help. See M.D.