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.
A culture of secrecy tantamount to the culture of Swiss Banks prevails among business people who refuse to divulge their investment interests. However weâve searched high and low to bring you a list, as accurate as possible, of ten of the richest business leaders* born or resident in Zimbabwe.