What are the long term side-effects of Lithium?

My search showed a concern of kidney function on long term users, witch could turn to Sugar Diabetes.

What are the side effects and long-term risks associated with taking lithium for bipolar disorder, and do I need any special tests to measure my lithium levels?

Answer: Lithium, when it's in excess, can cause dizziness, confusion, even seizures. People oftentimes have a mild tremor with lithium, which is not usually a reason to stop the medication. It's important to take blood levels of lithium, to make sure that it's in the therapeutic level.

Lithium: long-term effects on the kidney; a prospective follow-up study ten years after kidney biopsy

The discovery of lithium's benefits for those who suffer from certain affective disorders such as manic-depression (bipolar disorder) was seen as a virtual miracle. With its widespread use, however, came evidence that some of the side effects could be potentially dangerous. For example, it was believed that chronic treatment with lithium was responsible for kidney dysfunction that could be fatal if untreated.

I AM B-POLAR, USED TO TAKE lithium UNTIL AN EX GIRLFRIEND ALSO BP TOLD TOLD ME TO ASK MY DOCTOR ABOUT LAMICTAL AND KNOW I TAKE LAMICTAL AND IT FIND MUCH MUCH BETTER FOR ME I TAKE 300MG IN THE MORNINGS.

CONSULT YOUR PSYACIATRSIST ANYWAY