An active online user nowadays stores and publishes more and more information in internet based systems. The overall amount of information is building up a Distributed Personal Archive (DPA). Our vision is to analyse the individual user's data contained in the DPA to conclude information about the user and to derive information about his health state. By analyzing the data in the DPA, health features can be retrieved which, when jointly assessed, allow to conclude on the user's health profile with respect to a given health state or disease. Taking into account specific characteristics of DPA derived health profiles, medically sensible applications can be developed.