“A growing body of evidence suggests that an array of mental and physical conditions can make you slur your words, elongate sounds, or speak in a more nasal tone. They may even make your voice creak or jitter so briefly that it’s not detectable to the human ear.” Several companies and lot of researchers are looking to develop ways to diagnose various ailments by listening to the sound of your voice. (Hopefully they perfect this before my next prostate exam.)