Systematic review and meta-analysis of church-based interventions to improve cardiovascular disease risk factors

Church-based interventions have been shown to reduce cardiovascular disease (CVD) risk factors and could reduce health disparities in groups with a high burden of CVD. We aim to conduct a systematic review and meta-analysis to determine the effectiveness of church-based interventions for CVD risk factor improvement and to examine the types of interventions that are effective.

Systematic searches of MEDLINE, Embase, and manual reference searches were conducted through November 2021. Study inclusion criteria were church-based interventions delivered in the United States to address CVD risk factors. Interventions targeted barriers to improving blood pressure, weight, diabetes, physical activity, cholesterol, diet, or smoking. Two investigators independently extracted study data. Random effects meta-analyses were conducted.

A total of 81 studies with 17,275 participants were included. The most common interventions included increasing physical activity (n = 69), improving diet (n = 67), stress management (n = 20), medication adherence (n = 9), and smoking cessation (n = 7). Commonly used approaches for implementation included cultural tailoring of the intervention, health coaching, group education sessions, inclusion of spiritual components in the intervention, and home health monitoring. Church-based interventions were associated with significant reductions in body weight (-3.1 lb, [95% CI, -5.8, -1.2], N = 15), waist circumference (-0.8 in, [CI, -1.4, -0.1], N = 6), and systolic blood pressure (-2.3 mm Hg, [CI, -4.3, -0.3], N = 13).

Church-based interventions targeting CVD risk factors are effective for reducing CVD risk factors, particularly in populations with health disparities. These findings can be used to design future church-based studies and programs to improve cardiovascular health.