The voice is one of the main instruments of human communication and plays a fundamental role in all phases of life. Through the voice we express ideas, feelings, needs, and build personal, social, and professional relationships. From the point of view of an otolaryngologist, the voice also directly reflects the health of the structures and mechanisms involved in its formation: the larynx, the vocal cords, breathing, and resonance. Therefore, understanding and preserving vocal health is essential. Voice is important throughout life In children In children, the voice plays a crucial role in social, emotional, and educational development. It is through the voice that children learn to express emotions, thoughts, and needs. Vocal alterations, such as persistent hoarseness, may indicate: Inappropriate use of the voice, for example, through frequent shouting or imitation of sounds; Inflammation of the structures involved in the voice; Nodules on the vocal cords. Early medical identification of these alterations allows for appropriate intervention , preventing future problems in communication and development. In adults In adults, the voice remains an essential element in personal and professional life. Vocal changes are frequently associated with: Respiratory infections; Gastroesophageal reflux; Smoking; Natural aging of vocal structures; Excessive use of the voice. Thus, symptoms such as prolonged hoarseness, pain when speaking, vocal fatigue, or loss of voice intensity should be evaluated by an otolaryngologist , as they may be a sign of anything from benign problems, such as laryngitis, to more serious diseases. Voice professionals This particular group includes teachers, singers, actors, announcers, and other professionals for whom the voice is literally a work tool. Intense and prolonged use of the voice can be behind problems such as: Nodules, polyps, and edema of the vocal cords; Functional dysphonia. Therefore, in these cases, prevention and medical follow-up become particularly important to maintain vocal quality and avoid professional absences. Most common voice disorders Among the most common voice disorders are the following: Laryngitis; Vocal nodules; Polyps; Dysphonia; Laryngeal tumors, which are rarer than the previous ones. Many of these conditions are associated with improper voice use , exposure to irritants such as tobacco, dehydration, and infections. Main precautions to protect the voice Protecting the voice must be a daily habit, and many of the precautions also prevent other problems: Speak naturally, avoiding shouting, speaking loudly, or otherwise straining the voice for too long; Take regular breaks when it is necessary to speak for extended periods; Whenever necessary, adapt your breathing to support your voice and maintain a posture that does not strain the voice. Maintain good hydration; Do not smoke and avoid smoky environments; Avoid environments with very dry air; Reduce consumption of alcoholic and caffeinated beverages; Avoid frequently clearing your throat; Try to speak softly in the first few hours after waking up and when you are tired; For voice professionals, perform vocal warm-up routines before periods of intense or prolonged voice use; Treat respiratory illnesses, such as colds or flu, gastroesophageal reflux, and others that interfere with the voice; Maintain an adequate sleep routine. The prevention of voice disorders mainly involves these hygiene and vocal education measures and early attention to signs of alteration. Warning signs These are warning signs that should motivate seeking care from an otolaryngologist: Persistent hoarseness; Pain or fatigue when speaking; Loss of intensity or change in tone of voice without an explainable reason. Treatment for voice disorders depends on the cause and may include vocal rest, speech therapy, medication to treat inflammation or reflux, and, in some cases, vocal cord surgery. Early diagnosis , proper care, and specialized follow-up allow for the preservation of vocal health and ensure effective communication throughout life. Taking care of your voice is taking care of your quality of life. Author: Ângelo Fernandes (Otorhinolaryngology) Meet the otorhinolaryngology clinical team at the Hospital da Luz network. The content published in the Health Guide is intended for the general public and is provided for informational and educational purposes only. It does not replace individual medical assessment, diagnosis, or personalized clinical advice from a qualified healthcare professional. The content is produced or reviewed by physicians and other healthcare professionals at Hospital da Luz and is based on the knowledge available at the time of publication or the most recent update, as indicated at the beginning of each item.