Application of Mendelian randomization to explore the genetic association between drinking habits of different beverages and sleep disorder

Alcohol intake may elevate insomnia risk without affecting daytime sleepiness or sleep duration. Frequent alcohol consumption may lead to daytime sleepiness and reduced sleep duration but not insomnia. Alcohol with meals might reduce insomnia and daytime sleepiness while improving sleep duration. Tea appears unlinked to insomnia and may reduce daytime drowsiness. Coffee may alleviate daytime drowsiness without causing insomnia, and red wine shows no significant association with sleep disorders. Reverse MR suggests potential links between sleep disorders and alcohol or caffeine intake.