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HIV-related factors including antiretroviral therapy and low CD4+ counts associate with higher cardiovascular riskHIV infection and certain factors increase heart health risks

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Key Takeaway
Note that antiretroviral therapy and low CD4+ T-cell counts are associated with increased cardiovascular risk in HIV patients.

This meta-analysis synthesizes data from 4,175,459 individuals to evaluate the association between HIV-related factors and cardiovascular outcomes. The analysis identified a 6% prevalence of cardiovascular events (95% CI: 0.05-0.07) among the study population.

Several specific risk factors were associated with increased cardiovascular risk, including older age, smoking, antiretroviral therapy, male sex, CD4+ T-cell count <200 cells/mm3, detectable HIV viral load, dyslipidemia, hypertension, and syphilis coinfection. Specific outcomes showed distinct associations: myocardial infarction was linked to smoking, antiretroviral therapy, and dyslipidemia; arrhythmia was associated with prior cardiovascular disease and CD4+ T-cell count <200 cells/mm3; and stroke was linked to male sex, dyslipidemia, hypertension, and syphilis coinfection.

Conversely, higher CD4+ counts (per 100 cells/mm3) and Hispanic ethnicity were associated with lower cardiovascular risk. The authors note that these results are based on observational data and indicate associations rather than direct causation. Clinical implications suggest prioritizing early cardiovascular risk assessment, viral suppression, and immunological recovery for patients living with HIV.

How this fits prior evidence

This meta-analysis addresses a gap in understanding specific clinical drivers of cardiovascular events among people living with HIV. It expands upon the unified cardiometabolic disease framework by identifying specific HIV-related factors, such as antiretroviral therapy and CD4+ T-cell counts, that contribute to the broader pathophysiology of cardiovascular risk.

Living with HIV brings a unique set of challenges to long-term health. A large study involving over 4 million people looked at how HIV and other factors affect heart health, specifically looking for events like heart attacks, strokes, and irregular heartbeats.

The data shows that about 6% of the people studied experienced a cardiovascular event. The researchers found that several factors increased these risks, including older age, smoking, and certain medications used to treat HIV. Other conditions like high blood pressure, high cholesterol (dyslipidemia), and diabetes also played a role in increasing risk.

While some factors like being male or having a low T-cell count raised the risk of heart issues, others were protective. For example, people with higher CD4+ T-cell counts and those of Hispanic ethnicity showed lower risks. Because these results come from observational studies, they show how things are linked rather than proving one thing directly causes another.

What this means for you:
HIV and factors like smoking or high blood pressure can increase heart risks, while higher T-cell counts may offer protection.

Common questions

What specific factors increase heart risks for people with HIV?

Several factors were linked to higher cardiovascular risks, including older age, smoking, antiretroviral therapy, being male, and having a low CD4+ T-cell count (under 200 cells/mm3). Other conditions like high blood pressure, high cholesterol, and diabetes also increased the risk of heart problems.

Are there any factors that help lower heart risks?

The study found that higher CD4+ T-cell counts (per 100 cells/mm3) and Hispanic ethnicity were associated with a lower risk of cardiovascular events. These findings suggest that better immune health may play a role in protecting the heart.

What specific types of heart issues were linked to certain conditions?

Heart attacks were linked to smoking, antiretroviral therapy, and high cholesterol. Irregular heartbeats (arrhythmia) were linked to previous heart disease and low T-cell counts. Strokes were specifically linked to being male, high blood pressure, high cholesterol, and syphilis infections.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedDec 2026
View Original Abstract ↓
BACKGROUND: People living with HIV (PLWH) have increased cardiovascular risk, but the contribution of HIV-related factors to all-cause cardiovascular events remains unclear. We assessed the prevalence and determinants of cardiovascular events in PLWH, including subtype-specific risk profiles. METHODS: PubMed, EMBASE, Cochrane Library, Web of Science and Scopus were searched from January 1, 2004 to October 31, 2024. Observational studies reporting cardiovascular event prevalence or adjusted risk estimates in PLWH were included. Two reviewers independently selected studies and extracted data. Pooled relative risks (RRs) and 95% confidence intervals (CIs) were calculated using fixed- or random-effects models, and heterogeneity was assessed using Cochran's and statistics. RESULTS: Forty-three studies including 4,175,459 PLWH and 166,225 cardiovascular events were analyzed. The pooled prevalence of cardiovascular events was 6% (95% CI: 0.05-0.07). Higher risk was associated with older age, smoking, antiretroviral therapy, male sex, CD4+ T-cell count <200 cells/mm3, detectable HIV viral load, dyslipidemia, hypertension, diabetes, syphilis coinfection, prior cardiovascular disease and elevated red cell distribution width. Higher CD4+ counts (per 100 cells/mm3) and Hispanic ethnicity were associated with lower risk. Subgroup analyses showed that smoking, antiretroviral therapy and dyslipidemia were linked to myocardial infarction; prior cardiovascular disease and CD4+ T-cell count <200 cells/mm3 to arrhythmia; and male sex, dyslipidemia, hypertension and syphilis coinfection to stroke. CONCLUSION: PLWH have a substantial cardiovascular event burden driven by both traditional and HIV-related risk factors. Early cardiovascular risk assessment, viral suppression and immunological recovery should be prioritized.
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