Does your voice get higher with age?

The answer is: no

As people age, their voices tend to get lower, not higher. This is due to a number of factors, including changes in the vocal cords and the muscles that control them. The vocal cords become thinner and less elastic, which makes them vibrate at a lower frequency. The muscles that control the vocal cords also weaken, which makes it more difficult to produce high-pitched sounds. Additionally, the sinuses and nasal passages can become narrower as people age, which can also affect the quality of the voice.