In a nutshell
Some people can raise the sides of the tongue to form a tube. Others can make a different tongue shape or initially cannot perform such a movement. Tongue rolling is not a suitable simple test of a dominant or recessive inherited trait.
Why does it happen?
Several intrinsic and extrinsic tongue muscles work together to change the tongue’s shape and position. The observed ability depends on anatomy and motor control; studies of different tongue movements argue against a simple all-or-nothing explanation based on one gene.
Frequency
Tongue rolling is a common ability, but not everyone can do it. Results depend on the group studied, the precise task, and motor experience.
Frequency is a qualitative description, not your individual probability.
Is it normal?
Normal in the absence of pain or speech problems.
When to seek advice
New difficulty moving the tongue, weakness, or swallowing problems should be assessed.
Does this happen to you?
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Sources (1)
- Five Specific Tongue Movements in a Healthy Population (opens a new tab)
This source supports the description and physiological context of this entry.
Editorial update: . AI-assisted research and editing; not individually reviewed by a physician. How we research
