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.
In conclusion, the background of Uhuru Kenyattaâs wealth is awash with alleged illegal acquisitions by other members of his wider family, so it was unethical for Forbes to list him as the richest man in Kenya and the 26th richest man in Africa.