About a quarter of those suffer from severe illnesses, such as schizophrenia or bipolar disorder, and the rest from less debilitating ones, such as mild depression or anxiety.

这些患者中，大约有四分之一的人患有严重精神病，例如精神分裂症或者躁郁症，其余患者患有衰退性疾病，例如轻度抑郁症或者焦虑症。