Radiation-Stressed Plant Metabolites as Pharmacological Templates for Anti-Aging Interventions: Lessons from Longevity Hotspots in Blue Zones

Background: Blue Zones (BZs), such as Ikaria and Sardinia, are known for exceptional longevity and a high prevalence of centenarians. While genetics, lifestyle, and diet contribute, variations in lifespan within BZs suggest additional environmental factors. This study explores the role of natural background radiation and the dietary intake of radiation-stressed plants, which are enriched in bioactive secondary metabolites. These compounds are hypothesized to support healthy aging and serve as molecular templates for antisenolytic drug development targeting senescent cells and age-related diseases. Methods: We examined regional variations in natural radiation exposure in Ikaria and Sardinia and their correlation with longevity. Particular focus was given to radiation-induced stress in plants, which stimulates the production of secondary metabolites with antioxidant, anti-inflammatory, and radioprotective properties. Using the AQVN/EIIP electronic descriptor model, we assessed the molecular characteristics of key metabolites for their potential anti-aging effects and protection against radiation-induced damage. Results: Our results reveal a positive association between elevated natural radiation and increased survival rates in specific BZ populations. Radiation-stressed plants exhibited increased synthesis of metabolites with features consistent with known senescence modulators. Additionally, the accumulation of manganese (Mn) in these plants—and its proposed role in activating the anti-aging protein klotho—suggests a nutritional link to extended lifespan. Conclusions: This study highlights how natural radiation and hormetic plant responses may contribute to longevity in BZs. Radiation-stressed plant metabolites may offer both dietary and therapeutic potential for promoting healthy aging and inspire future anti-senolytic strategies.