With diagnostics methods becoming ever more efficient, it is possible to make increasingly precise statements on disposition and physiological functions. There are already companies offering genetic tests on the Internet for a few hundred US dollars – a saliva sample is all that is needed. In theory these findings should lead to us receiving treatment that is tailored precisely to our requirements if we fall ill. In addition, such data should also help to detect risks of disease early on. The study will examine the current possibilities and consequences of this «Personalised Medicine».