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Current Alcohol Consumption and Cardiovascular Disease among Men Infected with HIV
Matthew Freiberg*1, K Kraemer1, J Samet2, J Conigliaro3, R Ellison2, K Bryant4, L Kuller1, A Justice5, and Veterans Aging Cohort Study Project Team
1Univ of Pittsburgh, PA, US; 2Boston Univ, MA, US; 3Univ of Kentucky, Lexington, US; 4Natl Inst on Alcohol Abuse and Alcoholism, NIH, Rockville, MD, US; and 5West Haven VAMC and Yale Univ, New Haven, CT, US
Background: In the general population, the association between alcohol
consumption and cardiovascular disease (CVD) is J-shaped with moderate drinkers
at the lowest risk, infrequent drinkers at intermediate risk, and hazardous
drinkers at the highest risk. The reduced risk associated with moderate alcohol
consumption is mediated in part by improved lipid profiles and increased insulin sensitivity. ART is associated with dyslipidemia and increased insulin
resistance. Whether the association between alcohol consumption and CVD is
J-shaped among HIV+ people is unknown.
Methods: We performed cross-sectional analyses using
survey and laboratory data from 2028 HIV+ and 1927 HIV–
male subjects from the Veterans Aging Cohort Study, a prospective observational
cohort of U.S.
veterans with and without HIV. We used logistic regression to calculate the
odds ratio (OR) for the prevalence of CVD (defined as a self-reported history
of angina, coronary heart disease/myocardial infarction, congestive heart
failure, or stroke/transient ischemic attack) among those who currently drink
alcohol infrequently (<1 drink/week), moderately (1 to 14 drinks/week and
<6 drinks/occasion), or hazardously (>14 drinks/week or >6
drinks/occasion).
Results: The prevalence of infrequent, moderate, and hazardous
drinking was 23.9%, 25.1%, and 51.1%, respectively, for HIV+
subjects and 23.6%, 22.9%, and 53.4%, respectively, for HIV–
subjects. The prevalence of CVD among infrequent, moderate, and hazardous
drinkers was 11.6%, 10.0%, and 13.6%, respectively, for HIV+
subjects and 18.3%, 17.0%, and 17.0%, respectively, for HIV–
subjects. After adjusting for age, race, height, weight, lipids, diabetes,
hypertension, smoking, CD4 count, ART, liver and kidney disease, hepatitis C,
and exercise, the OR for CVD among HIV+ subjects was 1.09 (0.69 to 1.72)
for moderate and 1.63 (1.10 to 2.41) for hazardous drinkers as compared with
infrequent drinkers. Among HIV– subjects, the adjusted OR (excluding
CD4 count and ART) for CVD was 0.74 (0.51 to 1.09) for moderate and 0.92 (0.67
to 1.27) for hazardous drinkers as compared with infrequent drinkers.
Conclusions: For HIV+ veterans the J-shaped
relationship between alcohol and CVD was not observed after adjusting for
confounders. Among HIV– veterans, a J- shaped relationship was
observed although not statistically significant. Assumptions about alcohol’s
impact on CVD risk among HIV+ men based on general population
findings should be avoided.
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