It is also important to note that the mental disorder of psychosis is extremely rare, with about 3 in every 100 people experiencing a psychotic episode in their lifetime. The onset of psychosis, or similar disease processes like schizophrenia, usually begin in an individualâs late teens to early twenties.
1 Nationwide, 79% of undocumented immigrants are from Latin America a declining majority (52%) are from Mexico alone. 2  Most of the others are from Asia though Europe, Canada, and Africa account for hundreds of thousands of undocumented immigrants in the United States.
The nationâs population of illegal immigrants, which more than tripled, to 12.2 million, between 1990 and 2007, has dropped by about 1 million, according to demographers at the Pew Research Center. A key â but largely overlooked â sign of these ebbing flows is the changing makeup of the undocumented population.