Prevention of puberphonia.

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While there's no known way to prevent puberphonia, early intervention and treatment can help manage the condition. Voice therapy is the primary treatment option. 

Vocal exercises: Techniques like humming while sliding down a pitch scale, glottal attack on vowel sounds, snoring sound and using vegetative sounds to initiate low pitched voice production. Continuous voice exercises there for a few days to make it as a habits.

Group therapy is better, with abdominal breathing, with a pharyngeal voice nasal resonance.

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