Tattoos have made a striking evolution. Previously, by tattoos on the body, you could identify a savage from a tribe leading a primitive lifestyle. Then the drawings on the body became a distinctive feature of the criminal elements. Now this is just a way of self-expression. But in the near future, the elderly people, athletes and astronauts will start to fill themselves with a tattoo – that is, people who have to pay special attention to their health. This conclusion paradoxically follows from a joint study by scientists at Harvard University and the Massachusetts Institute of Technology who developed biosensor ink for tattoos that can monitor patients’ health.
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