Summary
Emotional states of depression and loneliness are reported to be associated with higher
risk and optimism with lower risk of arterial cardiovascular disease (CVD) and death.
The relation between emotional states and risk of venous thromboembolism (VTE) has
not been explored previously. We aimed to investigate the associations between self-reported
emotional states and risk of incident VTE in a population-based, prospective study.
The frequency of feeling depressed, lonely and happy/optimistic were registered by
self-administered questionnaires, along with major co-morbidities and lifestyle habits,
in 25,964 subjects aged 25–96 years, enrolled in the Tromsø Study in 1994–1995. Incident
VTE-events were registered from the date of inclusion until September 1, 2007. There
were 440 incident VTE-events during a median of 12.4 years of follow-up. Subjects
who often felt depressed had 1.6-fold (95% CI:1.02–2.50) higher risk of VTE compared
to those not depressed in analyses adjusted for other risk factors (age, sex , body
mass index, oes-trogens), lifestyle (smoking, alcohol consumption, educational level)
and co-morbidities (diabetes, CVD, and cancer). Often feeling lonely was not associated
with VTE. However, the incidence rate of VTE in subjects who concurrently felt often
lonely and depressed was higher than for depression alone (age-and sex-adjusted incidence
rate: 3.27 vs. 2.21). Oppositely, subjects who often felt happy/optimistic had 40%
reduced risk of VTE (HR 0.60, 95% CI: 0.41–0.87). Our findings suggest that self-reported
emotional states are associated with risk of VTE. Depressive feelings were associated
with increased risk, while happiness/ optimism was associated with reduced risk of
VTE.
Keywords
Depression - emotional states - happiness - psychosocial factor - venous thromboembolism