A Conceptual Digital Health Framework for Longevity Optimization: Inflammation-Centered Approach Integrating Microbiome and Lifestyle Data—A Review and Proposed Platform

Chronic low-grade inflammation, or "inflammaging," represents a central mechanism linking dietary patterns, gut microbiome composition, and biological aging. Evidence from Blue Zone populations and Mediterranean diet studies demonstrates that specific nutritional interventions are associated with up to 23% lower all-cause mortality, with analyses suggesting that part of this association may be mediated by measurable improvements in inflammatory biomarkers. This paper synthesizes published evidence from Mediterranean diet trials, centenarian microbiome studies, and digital health platforms to propose a comprehensive digital health framework that integrates quarterly inflammation and microbiome monitoring with continuous lifestyle tracking to deliver personalized longevity interventions. This paper introduces the Longevity-Inflammation Index (L-II), a composite score combining high-sensitivity C-reactive protein, interleukin-6, tumor necrosis factor-alpha, and microbiome-derived markers, with scoring algorithms derived from centenarian population studies. The proposed platform leverages artificial intelligence to generate evidence-based recommendations adapted from centenarian and Mediterranean dietary patterns. Published evidence from multiple randomized controlled trials demonstrates that Mediterranean dietary interventions reduce hs-CRP by 18-32%, increase microbiome diversity by 6-28%, and improve metabolic markers including HOMA-IR and TG/HDL ratios. Digital health platforms demonstrate sustained engagement rates of 58-84% at 12 months, with dietary logging frequencies of 4-6 days per week. Cost-effectiveness analyses of dietary interventions show incremental cost-effectiveness ratios of USD 2100-4800 per quality-adjusted life year gained. This inflammation-centered digital health framework offers a scalable approach for translating longevity research into practical interventions for healthy aging, with validation studies needed to confirm the integrated platform's efficacy and real-world implementation feasibility.