Around 75 percent of children and adults with attention deficit hyperactivity disorder (ADHD) also have sleep problems, but until now these have been thought to be separate issues | ScienceDaily
- In 75% of ADHD patients, the physiological sleep phase — where people show the physiological signs associated with sleep, such as changes in the level of the sleep hormone melatonin, and changes in sleep-related movement — is delayed by 1.5 hours.
- Core body temperature changes associated with sleep are also delayed (reflecting melatonin changes)
- Many sleep-related disorders are associated with ADHD, including restless-leg syndrome, sleep apnea, and the circadian rhythm disturbance, the delayed sleep phase syndrome
- ADHD people often show greater alertness in the evening, which is the opposite of what is found in the general population
- Many sufferers benefit from taking melatonin in the evening or bright light therapy in the morning, which can help reset the circadian rhythm
- Recent work has shown that around 70% of adult ADHD sufferers show an oversensitivity of the eyes to light, leading many to wear sunglasses for long periods during the day — which may reinforce the problems associated with a ‘circadian shift’.
- Chronic late sleep leads to a chronic sleep debt, associated with obesity, diabetes, cardiovascular disease and cancer. This cascade of negative health consequences may in part be preventable by resetting the sleep rhythm.
Read the overview via ScienceDaily here