Abstract Background Polygenic Risk Score (PRS) represents a promising advancement in personalized medicine, enabling the inherited risk assessment for disease outcomes based on the effect of various common genetic variants. The utilization of PRS information to promote the adoption of healthier behaviors has witnessed an increase interest in recent years, but its full potential still needs to be fully addressed. Methods This systematic review aims to assess the efficacy of disclosing PRS information on individuals’ engagement in risk-reducing interventions. CENTRAL database has been searched up to December 2023 to identify randomized controlled trials (RCTs) comparing the disclosure of PRS results, with scenarios where other or no information is provided. We performed a preliminary meta-analysis on the mean difference of clinical and psychological outcomes between the two arms. Results Out of 4419 results, we included 12 studies. Trials focused on primary (83%), secondary (8%) and tertiary (8%) preventive interventions. As for the possible diseases predicted by the PRS, cardiovascular diseases (33%) were the most common (n = 4), along with cancers (33%), diabetes (25%) and metabolic disease (8%). PRS result disclosure was compared to standard care (n = 7), no information provided (n = 4), and family risk (n = 1). By pooling data from four comparable studies, we report a reduction in the mean difference for LDL cholesterol in the intervention group of -6.39mg/dL (95%CI -10.09, -2.70, I²=0%, p < 0.001). No significant changes were observed for systolic and diastolic blood pressure, and weight, in 3 studies and 4 analyzed studies, respectively. An increase in anxiety levels was observed towards the PRS group in 4 studies (SMD 0.24, 95%CI 0.02, 0.46, I² = 66%, p = 0.03). Conclusions Preliminary analysis show small or no effects of PRS disclosure on intermediate health or psychological outcomes. Larger trials assessing the potentiality of PRS disclosure are still needed. Key messages • From the analysis of twelve preventive trials on the efficacy of PRS on behavior change, we report a positive effect on LDL cholesterol reduction. • Larger well conducted trials are needed to integrate PRS-based information into future preventive strategies.