With that come all the usual problems: families that can't pay the rent, that are more likely to fall prey to a whole range of sicknesses, from mental health to cancer.
The Rift attempts to beat those problems with a high-resolution display, super-accurate head-tracking sensors and a range of technologies designed to minimise the sickness.
Exposure to high levels of radiation - above one gray (the standard measure of the absorbed dose of radiation) - can result in radiation sickness, which produces a range of symptoms.
They also argued the case for extending the remit of activation strategies, suitably modified, to other working-age recipients of a range of inactivity benefits such as disability/long-term sickness, early retirement, and sole-parent or social assistance benefits.
The women identified a range of barriers to weight management in pregnancy which included sickness, tiredness and food cravings.
Pregnancy-related conditions included a range of concerns such as avoiding miscarriage, managing early pregnancy sicknesses (stomachache, vomiting, and diarrhea), strengthening the fetus, and preparing for childbirth.
Protozoan parasites comprise a highly divergent group of eukaryotes that cause a range of debilitating diseases in humans, including malaria, leishmaniasis, African sleeping sickness, and Chagas' disease.
Studies of environmental variables as risk factors or predictors of sleeping sickness have been carried out at a range of spatial scales.
Sleeping sickness intervention in Africa is constrained by a range of factors and processes.
The disability program is one of a range of benefits provided by the retirement board, which also include survivor, unemployment and sickness payments.
