Genetic discoveries are made at a tremendous pace, and I'm excited that genes associated with many sleep disorders belong to these findings. All of these new genetic tests may someday help physicians understand who is at risk, and perhaps help them find a cure for them. Some genes are already being tested with popular consumer test kits.
So far, research has shown that narcolepsy, the disorder of extreme, excessive drowsiness, was associated with a particular gene (HLA-DQB1 * 06: 02). Restless Legs syndrome has a strong genetic link – 60% of cases are considered familial, and four genes have been linked to the disorder.