Sleep disorders.

The Medical Journal of Australia ISSN: 0025729X 21 October 2013 199 8 11-15 ©The Medical Journal of Australia 2013 www.mja.com.au Supplement markers (eg, circulating cortisol pressure, cardiac vagal modula consistent with epidemiological adverse cardiovascular events laboratory studies demonstrate ment (such that individuals sle with the circadian pacemaker) le • About 1.5 million Australians are shift workers. Shift work is associated with adverse health, safety and performance outcomes. Circadian rhythm misalignment, inadequate and poor-quality sleep, and sleep disorders such as sleep apnoea, insomnia and shift work disorder (excessive sleepiness and/or insomnia temporally associated with the work schedule) contribute to these associations.