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The global financial crisis is likely to cause increased mental health problems and even suicides as people struggle to deal with poverty and unemployment, the World Health Organization warned Thursday． Hundreds of millions of people worldwide are already affected by mental problems such as depression and bipolar disorders （带躁狂的抑郁症） and the current market meltdown （崩溃） could worsen feelings of despair among people who can't stand such illnesses． The United Nations agency said the impact could be especially marked for those living in low and middle income countries1.2：45化成最简整数比是 ，比值是 ．