According to most studies and research, it is possible to improve your vocals and regain your voice via certain voice improvement techniques. These techniques can often be dependent on therapies, diet, routine, etc. 

The cricothyroid muscle receives impulses from the superior laryngeal nerve (SLN). Because this muscle regulates the tension of the vocal fold while singing, SLN paresis and paralysis cause anomalies in voice pitch and the inability to sing with a seamless adjustment to each higher note. Therefore, if you have any doubts you should immediately seek the Best voice treatment for singers you know of.