Beer is contraindicated in particular segments of the population as well. For instance, individuals who have chronic gastrointestinal disorders are advised against consumption of the beverage as it is associated with irritable bowel syndrome, abdominal pain and dyspepsia. Experts believe that alcohol use and anxiety disorder can both function as a trigger to the other and so those with conditions like depression or social anxiety disorder may do well to steer clear of beer. Nursing women are advised against intake, too, as alcohol is transferred to the milk and will then be consumed by the infant. Disturbed sleep and impaired gross motor development are the known side effects of infant alcohol ingestion from breast milk.