Pituitary = endocrine. If that's the case then I would research and take adrenal adaptogens. Just because the symptoms are exhibited from your pituitary or thyroid does not mean that's the origin of the problem. Most hormone systems in the body use a function called "negative feedback" to control hormone output. If that feedback system is off at all, then different glands do not release their hormones; but this does not necessarily mean that those particular glands are deficient or under-active. A good example of this is the adrenal/pituitary feedback mechanism for ACTH, which is involved in many metabolic processes, including the way the liver processes lipids (fat). If ACTH output is low, then thyroid function may decline by proxy. Low ACTH output is associated with stressed out adrenals. If the adrenals are deficient at all, then this feedback loop will be incomplete or deficient.
You can read about negative feedback with plenty of examples here:http://en.wikipedia.org/wiki/Negative_feedback
I'm just saying all this to help you with your own investigations, if you want to do any. If you accept the pituitary diagnosis then you have my full support in whatever treatment you decide to do.
The artist's job is not to succumb to despair, but to find an antidote to the emptiness of existence. -W.A.