The University of Washington tested the theory that sleepwalking was a genetic disorder. According to the researchers, they managed to find a DNA site responsible for the tendency to develop somnambulism, the BBC reports, citing a publication in the journal Neurology.
The study involved four generations of the same family - a total of 22 people, 9 of whom suffered from sleepwalking. The most common occurrence was unconscious night walks, which often resulted in broken limbs. And one man managed, without waking up, to put on eight pairs of socks.
Having made an analysis of DNA extracted from the saliva of somnambulists and their relatives, experts found a specific region in the 20th chromosome (locus 20q12-q13.12), the presence of a single copy of which in the genome with a probability of 50% predicted that a person was becoming a lunatic.
Now scientists are investigating which of the 28 genes included in this region is the "culprit" in the development of the disease. The greatest suspicions fall on the adenosine deaminase gene, which is responsible for the production of the corresponding enzyme. This enzyme, in turn, is responsible for the phase of slow sleep, in which, as is known, sleepwalking occurs.