Scientists from Switzerland and the United States are developing sensors that can measure biological age based on molecules in sweat. +Get the most important news from Switzerland in your inbox The aim is to develop a kind of 'age clock' that continuously provides data on the physiological state of the body, the Swiss Federal Laboratories for Materials Science and Technology (Empa) announced on Thursday. In addition to Empa, ETH Zurich, the University Hospital Basel and the California Institute of Technology (Caltech) are also involved in the research project called Age Resist. + How Switzerland became a longevity hotspot According to Empa, ageing is a biological phenomenon that is still poorly understood. However, it is known that fitness and susceptibility to certain diseases change over the course of a person's life - and that medical treatments need to be better tailored to the individual condition of the body. The chronological age, measured in years of life, says only a ...