Untrue statement

'People with true hypothyroidism would be unaware they have it until diagnosed.'

When you are so drowsy you sleep for 48/72 hours at a time and more, have impaired memory and need numerous layers of clothing you know you are hypothyroid. The Dr has a tendency to start listening when you mother shouts down the phone at him these facts!

Been there often Lou, before diagnosis and after.
There may be a more subtle slip into it for those who find these symptoms a normal part of living? Personally I always wanted to get out and do things so for me this wasn't so. Sorry you couldn't tell you were suffering from a terribly slow metabolism :O