There may be no single cause of bipolar disorder (aka manic depression). Instead, research indicates the causes of bipolar disorder are probably a combination of biochemical, genetic and environmental factors that may trigger and perpetuate the chemical imbalances in the brain.
Net worth: $829 million. Telecommunications mogul Strive Masiyiwa is widely regarded as the richest man in Zimbabwe and is one of the richest men in Africa with a net worth of more than US$800 million.
The richest person in Missouri is John Morris. He has a net worth value after valuation of $3.8 billion, according to Wealth-X.). â By CNBC's Robert Frank. Follow him on Twitter @robtfrank. Secret Lives of the Super Rich. An all-new series airing Wednesdays at 9 p.m. ET/PT. |http://superrich.cnbc.com.