Digital Smarts - Voice Assistants to Detect Illnesses?

Imagine a day when Siri or Alexa might be able to let you know you have a cold -- or something worse -- coming on. Researchers are working on a tool that leverages machine learning to detect irregularities in a person's voice that can be linked to certain ailments. The "diagnosis" isn't designed to be definitive, just more of a nudge to seek additional medical care. Privacy concerns abound, but a tool like this makes sense. Who/What has a better gauge on your current health? A doctor you haven't seen in months, or a virtual assistant that can track your movements, monitor your sleep and listen to your every cough and sneeze?