David Ansiau

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OBJECTIVES Shift work, like chronic jet lag, is known to disrupt workers' normal circadian rhythms and social life, and to be associated with increased health problems (eg, ulcers, cardiovascular disease, metabolic syndrome, breast cancer, reproductive difficulties) and with acute effects on safety and productivity. However, very little is known about the(More)
Many of the health problems that are more prevalent among shiftworkers are thought to be linked to their heightened susceptibility to metabolic syndrome, i.e., the association of even moderate degrees of visceral obesity, dyslipidemia, abnormal blood pressure, and serum glucose levels in the same individual. Although previous studies have identified(More)
Changes of alertness and cognitive efficiency has been suggested in people whose circadian rhythms are disrupted, e.g. night or shift-workers. Data from field and laboratory studies have demonstrated short-term cognitive disturbances related to circadian rhythm disruption. By contrast, little is known about the long-term consequences of chronic sleep(More)
Results from a number of studies have suggested a relationship between cognitive alteration and benzodiazepine use in the elderly. The aim of this study was to determine the impact of benzodiazepine use on cognitive functions in a young adult population. This study included 1,019 French salaried workers from the VISAT (Aging, Health and Work) cohort whose(More)
OBJECTIVES With the workforces in industrialized countries getting older, this study sought to determine how shiftworking affects sleep in later life. METHOD Longitudinal data were collected from a large sample in 1996, 2001, and 2006 from employees who were 32, 42, 52, and 62 years old in 1996. RESULTS The effects of shift work were most apparent in(More)
OBJECTIVES This study examined the effects of age, gender, and retirement on the subjective frequency of various sleep problems in individuals on a normal work schedule. DESIGN Data were taken from the VISAT study (Aging, Health, - Work), which allowed both cross-sectional and longitudinal aspects of age-related changes to be examined. SETTING Various(More)
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