<unk>  are<unk>  that are more prevalent among "the poor" than among wealthier people.  In many cases<unk>  is the leading risk factor for such<unk> , and in some cases<unk> can (or allegedly) cause<unk> .
Diseases of poverty
Mental disorder causes
Dementia causes
Dangerous goods
Causes of mental disorders
Information addiction
Child psychopathology
Mental disorder risk factors