What are the lines on the palms for and what do they tell us?

Lines on the palm have long attracted attention: some believe that they can predict the future, which led to the emergence of palmistry, a pseudoscientific field. However, from a scientific perspective, these folds serve a purely functional role, helping the skin stretch and contract.

They form in the embryo as early as the 12th week of development and persist after birth. These lines allow the skin to bend without excess folds, which simplifies grasping objects.

Usually, there are three main folds on the palm, but sometimes there is only one - a "single transverse palmar crease." This variant may be associated with developmental disorders, particularly observed in children with Down syndrome. However, for an accurate diagnosis, doctors consider other signs as well.

The shape and number of folds depend on heredity and ethnic characteristics.