Vocal cord(s) injury could occur at any given time and affect anybody, regardless if they are a professional speaker or professional singer. The regular person, while speaking does not always realize that they are using their voice excessively loud and sometimes forcing that voice to the max in order to make a point.
This type of voice misuse could very easily lead to the injury of the vocal anatomy.
If, on top of everything else, in the environment where the person is residing or otherwise being around other unhealthy surroundings, the voice injury will be even more prone to happen.
For example: In places where the climate is very dry (desert like), the human body and vocal box in particular does not get enough moisture; and thus the vocal anatomy becomes very dry which could cause symptoms like sore throat and nevertheless dry vocal cords.
The latter could easily lead to any kind of vocal cord growths such as nodules, polyps, cysts, lesions, just to name a few…
With that said, one’s throat has to be kept moist, free of gastric acid and (needless to say) mucus.
The above could be easily achieved by following the mucus-less and low acidic diet.
The person should drink plenty of water and avoid dairy foods consumed in access (cheese, milk, yogurt, ice cream and etc.)
The highly acidic foods include:
– Spicy foods
– Most carbonated drinks
And many others…
As for singers, they should follow the same guidelines, (i.e., not to scream and not to force their voice to the max while speaking and singing).
They should learn the proper vocal technique, which will allow them to use their voice in the fullest capacity possible, but yet with no pain or strain on their vocal anatomy.
Adapting the above-described technique will not only prevent a singer’s voice from injured vocal cords, but will enhance their vocal performance to its maximum capacity and quality.