Headaches and migraines are a regular occurrence for a number of people around the globe and new studies have concluded that they could be directly linked to a variety of sleep disorders. Studies show that morning headaches could be a major indicator of potentially deadly problems in the long term. This is according to Dr Stan Farrell, a sleep specialist with AZ-TMJ. "We go through many different stages of sleep each night," he explained. "The most important stage that affects headaches is REM sleep, which is the dreaming state of sleep. The number of REM sleep periods that a person has each night is directly correlated with migraine headaches." He claimed that the people who are unable to fully sleep at night are not able to go through the correct number of REM cycles and are forced to deal with a higher chance of chronic headaches. Dr Farrell added: "By increasing awareness about the potential underlying issues of chronic headaches, many sufferers can become aware of their sleep disorders early and receive treatment before any other issues arise."