Can a person lose their voice if they stop talking?
You can temporarily lose your voice for any ailment that involves your larynx (a medical term for the voice box in your throat). Furthermore, complete aphonia (complete loss of voice) can occur after severely injuring your vocal chords and having them lose their ability to vibrate and produce sound. Finally, social phobias (fear of speaking in public) can cause a person to believe they are mute, although most of the time they can regain their voice in a private setting; However, to your question, simply not talking for an extended period of time cannot cause any form of voice loss…although it might improve your listening ability.
