I found this example interesting due to witnessing relatives experiencing heart disease and how modern medicine is utilising AI for early detection/prevention.

‘Predicting and monitoring cardiovascular disease is often expensive and tenuous, involving high-tech equipment and intrusive procedures. However, a new method developed by researchers offers a better way. By coupling a machine learning model with a patient’s pulse data, they are able to measure a key risk factor for cardiovascular diseases and arterial stiffness, using just a smart phone. ‘

https://www.sciencedaily.com/releases/2018/04/180417100547.htm