How does your doctor know that a drug or procedure will work to treat a condition before they try it? Often, they don’t. Researchers are looking to create “digital twins,” digital versions of individual organs, to see how a patient will respond. Eventually there could be digital twins of entire bodies that are updated in real time with patient data. WSJ’s Alex Ossola speaks with WSJ senior special writer Stephanie Armour about how that might change the way we treat diseases in the future.  What do you think about the show? Let us know on Apple Podcasts or Spotify , or email us: [email protected]  Sign up for the WSJ's free The Future of Everything newsletter.  Further reading: A ‘Digital Twin’ of Your Heart Lets Doctors Test Treatments Before Surgery   Learn more about your ad choices. Visit megaphone.fm/adchoices