We see some people who suddenly get sleepy even if they have claimed that they have had a good night’s sleep. While this may be debatable, assuming that his claims are true, one has to wonder why a person would still be sleepy despite a full sleep taken.

But thanks to some researchers in Japan, it has been discovered that Narcolepsy and genes known as singe nucleotide polymorphisms or SNP. SNP is a DNA sequence variation between members of a species.

During the research, researchers discovered a genetically mutated fragment of chromosome 22 which increased subjects’ vulnerability to the disease by 1.8 times. Researchers also discovered that the mutation causes a malfunction of the gene CPT1B, which is linked to sleep. Researchers also found that a link between the genetic mutation and narcolepsy was also found in South Koreans.

(Source) Top News