Systematic evaluations of functional and cognitive status, comorbidities, health status, mobility, nutritional status, psychological status, and social circumstances as well as measurements of cellular senescence and chronic inflammation will be performed in a cohort of prostate cancer patients at baseline (before radiotherapy), at the end of radiotherapy and at follow-up intervals thereafter. The evaluation of aging-related biomarkers will include determination of markers of cellular senescence and markers of systemic inflammation. The correlation between genetic variants modulating telomere length and the risk of developing age-related phenotypes will also be analyzed.