Are you a winter enthusiast? Or do you get a bit down about the cold, dark days?

Sleep is absolutely essential for basic maintenance and repair of our neurological, endocrine, immune, musculoskeletal and digestive systems.

If your thyroid is under-functioning you get a diagnosis of hypothyroid. And you receive a prescription for hormone replacement, usually Levothyroxine, Synthroid, or a generic. Problem solved, end of story. Right?