The forecasted increase in the number of older people for this century will be accompanied by an increase of those with disabilities. Disability is usually preceded by a condition named frailty that encompasses changes associated with ageing, life styles and chronic diseases. To detect and intervene on it is of outstanding importance to prevent disability, as recovery from disability is unlikely. Recent documents stress the necessity of testing the clinical utility (in terms of risk prediction, diagnosis validity and prognostic significance) of the existing definition of frailty by using combinations of clinical criteria (current definition) and lab Biomarkers (BMs).We will measure the levels of blood and urine omic-based BMs in old people selected from eight cohorts, which include up to 75,000 participants, using standardized and innovative technology (WP1). This figure will allow us to test the research questions with a high power and validity. Combining these lab BMs with clinical BMs, we will develop predictive, diagnostic and prognostic models (WP2), with its modulation by nutrition and physical activity, in general old population and in old people showing some characteristics that confer a high risk for developing frailty (selected cardiovascular risk factors and diseases) (WP4). After that, a selected set of BMs will be validated prospectively (WP3) and assessed to find the best-fitted models (WP4). These models will guide the development of the ready-to-use kits to be implemented in the clinical settings. These kits will be at the center of dissemination and exploitation activities (WP5, WP6).A well-balanced consortium distributed over the individual tasks in the respective work packages will carry it out, with a strong participation of SMEs. In summary, FRAILOMIC is original, relevant, pertinent, feasible, overcome the usual research bottlenecks on Biomarkers, and fits perfectly with the topics addressed by the HEALTH.2012.2.1.1-2 call in human subjects