According to the American Psychiatric Association (APA) Practice Guidelines for the Treatment of Patients with Bipolar Disorder, biochemical hypothyroidism develops in 5% to 35% of patients with bipolar disorder, usually within 6 to 18 months of lithium treatment initiation.
The longest-surviving dynasty in the world is the Imperial House of Japan, the Yamato dynasty, whose reign is traditionally dated to 660 BC.
Longest Reigning British Monarchs. The current queen, Elizabeth II, of the United Kingdom has been in power for over 64 years. The British Royal Family with Queen Elizabeth II in the yellow dress. The British Monarchy is the type of government in place in the United Kingdom.