AI finds its place in the stages of clinical trials, such as searching knowledge bases (Cochrane, Medline), statistical analysis, generation of text of scientific articles, increasing both the speed and quality of clinical trials. AI develops diagnostic algorithms whose accuracy and efficiency often exceeds that of the doctor. The Cognitive Digital Twin (CDT), through digital simulations of different patient populations, therapeutic interventions and disease scenarios, leads to personalized medicine as opposed to treating the "average patient".