Don’t worry, it’ll get better soon Andriy Popov / Alamy

It’s true – wounds in the mouth really do heal much faster than cuts to the skin. A study has discovered that the lining of the mouth is permanently primed for healing. The finding could lead to new ways to improve wound-healing elsewhere in the body.

Silvio Gutkind of the University of California at San Diego and his team made small wounds in the mouths and on the upper arms of 30 volunteers, and tracked how well and quickly they healed.

The mouth wounds rapidly closed and healed scarlessly, …