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The voice change is the result of structural changes in the larynx (voice box) under the influence of the male hormone testosterone. Voice change in the average boy begins in early puberty when a boy’s testicles begin to enlarge and produce testosterone. The specific age this takes place will depend on when puberty begins, and puberty may begin any time between ages 10 years to 14 years (see below.) There is then a gradual change or deepening of voice throughout puberty. The average age for completion of voice change is between 14 and 16 years, but just as there is a significant variation in puberty so is there in voice change. In regards to how low, this depends on many factors and it is not possible to give an exact answer. Some people are " tenors" (sing high) and others are "baritones " (sing low).
For more information, check out these articles:
Growing Up as a Boy
Just for Guys – All About Puberty
What Happens When
Posted 1-16-03
Do you have a question?  As a reminder, this information should not be relied on as medical advice and is not intended to replace the advice of your doctor. Please read our full  .
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