Summary
Knowledge about the influence of alcohol intake on the risk of venous thromboembolism
(VTE) is limited. We investigated the risk of VTE according to alcohol intake and
drinking pattern among 27,178 men and 29,876 women participating in the Danish follow-up
study Diet, Cancer and Health. Information on alcohol exposure and potential confounders
were obtained from baseline questionnaires. We used Cox proportional hazard models
to assess the association between VTE and alcohol intake. We performed separate analyses
for the two sexes. During follow-up 619 incidents VTE events were verified. The lowest
incidence rates of VTE were found for an average weekly intake of 3.9–13.9 standard
drinks per weeks both for men and women. The adjusted hazard ratio (HR) was 0.91 [95%CI:
0.69–1.19] for women and 0.75 [95%CI: 0.56–1.02] for men according to an average alcohol
intake of 3.9–13.9 standard drinks per week compared with low alcohol intake. In men,
alcohol intake 2–6 times per week was associated with a lower risk of VTE compared
to once per week (HR 0.77 [95%CI: 0.59–0.99]), but the difference disappeared after
adjustment for total alcohol intake. We found no difference in the risk of VTE according
to wine and beer intake. In conclusion, we found no consistent or statistically significant
association between VTE and alcohol intake. Our data showed a u-formed association
between alcohol intake and VTE, indicating that moderate alcohol intake may lower
the risk of VTE with 10–30% in men.
Keywords
Venous thromboembolism (VTE) - alcohol intake - drinking pattern - pulmonary embolism
(PE) - deep venous thrombosis (DVT)