I love my lithium, I really do. It's made the world a much better place to be and it's stopped me crying all the time. So, yes, big fat yay for lithium.
However, I'm now wondering whether my long-standing hypothyroidism / Hashimoto's (diagnosed 20 years ago) has been affected by the lithium. I'd always thought that it was the running that tipped it over the edge and made my fT4 levels unstable but I started taking the lithium about three months before I started running (just over a year ago).
Six years after first diagnosis I had an ultrasound of my neck (my GP said it was protocol in France to do extensive thyroid tests prior to diagnosing bipolar disorder) and it was discovered that one whole lobe was gone. And I mean, nothing there to see AT ALL. Weird. So I didn't have much gland left when I started on the lithium.
Is it possible? Most of the medical literature on t'interwebs deals with lithium CAUSING hypothyroidism in non-symptomatic / undiagnosed patients. There's not much on there that deals with its effect on us old timers. Does anyone know / have any direct and measurable experience?