Telemedicine and Digital Health Interventions for the Management of Metabolic Syndrome: A Systematic Review of Clinical Outcomes

BACKGROUND: Metabolic syndrome (MetS) is a major risk factor for type 2 diabetes and cardiovascular disease. In recent years, telemedicine and digital health interventions have emerged as promising strategies to support lifestyle modification and the long-term management of cardiometabolic conditions. However, their clinical effectiveness in MetS remains heterogeneously reported. METHODS: A systematic review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. PubMed, Scopus, and Web of Science were searched for studies published between 2019 and 2024. Eligible studies included adults with MetS or its components and evaluated telemedicine or technology-enabled interventions, including mobile health (mhealth) applications, remote monitoring, wearable devices, or telecommunication-based care. Outcomes of interest included waist circumference (WC), glycemic parameters, blood pressure, and lipid profile. RESULTS: Twenty seven studies met inclusion criteria. Most interventions incorporated telemedicine components such as remote coaching, digital feedback, and continuous monitoring, frequently delivered through mobile platforms and wearable technologies. These interventions consistently resulted in reductions in WC, while modest but recurrent improvements were observed in glycemic control and blood pressure. Effects on lipid parameters were more variable, with more frequent improvements in high-density lipoprotein cholesterol than in low-density lipoprotein cholesterol. Higher intervention intensity and user engagement were associated with greater clinical benefits. CONCLUSIONS: Telemedicine and digital health interventions represent effective adjuncts to conventional lifestyle management of MetS, particularly for central obesity and glycemic outcomes. Their ability to deliver scalable, personalized, and remotely supported care highlights their potential role in cardiometabolic prevention and management. Further research is needed to standardize intervention components and optimize long-term effectiveness.