Katriina Viitasalo

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Shiftwork is associated with an increased risk of cardiovascular diseases, but the possible role of inflammation in this relationship is not well known. We tested the hypothesis that shiftwork would be associated with higher levels of C-reactive protein (CRP) and increased leukocyte count. We analyzed the cross-sectional associations between work(More)
OBJECTIVE The occurrence of possible health hazards among former shift workers is not well-known. We studied associations of former and current shift work with the metabolic syndrome (MetS). METHODS Participants were 1811 full-time employees of a large airline company (1009 men). Working times were categorized into five groups: day worker(More)
Our aim was to validate a 16-item food intake questionnaire (16-FIQ) and create an easy to use method to estimate patients' nutrient intake in primary health care. Participants (52 men, 25 women) completed a 7-day food record and a 16-FIQ. Food and nutrient intakes were calculated and compared using Spearman correlation. Further, nutrient intakes were(More)
OBJECTIVES Over 20% of employees in Europe work in shifts. Shift work increases the risk for chronic diseases, but a healthy lifestyle may attenuate the adverse effect of shift work. The aim of this study was to explore food and nutrient intake differences between working time groups. METHODS The participants were 1478 employees (55% of men) of an airline(More)
OBJECTIVES A controlled intervention study was conducted to evaluate the effects of two changes in shift characteristics on alertness and cardiovascular risk factors: a change in shift rotation (direction and speed) and a change in the flexibility of the shift system. METHODS Altogether 84 male workers currently working in a backward-rotating shift system(More)
Job-related exhaustion is the core dimension of burnout, a work-related stress syndrome that has several negative health consequences. In this study, we explored the molecular genetic background of job-related exhaustion. A genome-wide analysis of job-related exhaustion was performed in the GENMETS subcohort (n = 1256) of the Finnish population-based Health(More)
We describe an acute inferior myocardial infarction in a 29-year-old woman with normal coronary arteries. She has suffered from Raynaud's phenomenon in the fingers for several years. Manifest thyroid deficiency was discovered during hospitalization. A functional-type link between hypothyroidism and myocardial infarction via vasospasm manifested as Raynaud's(More)
AIMS To assess the risk for type 2 diabetes (T2D) and cardiovascular disease (CVD) among employees of a Finnish airline; to study the association of shift work with T2D and CVD risk; and to test the feasibility of risk screening in occupational health care setting. METHODS Altogether 4169 employees were invited for a health check-up and 2312 participated(More)
AIMS To evaluate feasibility and effectiveness of lifestyle counseling in occupational setting on decreasing risk for diabetes and cardiovascular disease. METHODS A health check-up including physical examination, blood tests, questionnaires and health advice was completed on 2312 employees of an airline company. Participants with elevated risk for type 2(More)
Study Objectives Tolerance to shift work varies; only some shift workers suffer from disturbed sleep, fatigue, and job-related exhaustion. Our aim was to explore molecular genetic risk factors for intolerance to shift work. Methods We assessed intolerance to shift work with job-related exhaustion symptoms in shift workers using the emotional exhaustion(More)