Why are sleep problems so common in people with ADHD?
People living with ADHD often know this problem all too well: The day was long, the body actually feels tired—and yet sleep just won’t come. Instead of gradually winding down, the brain seems to kick into high gear again in the evening. Thoughts race, new ideas pop up, or attention gets caught up in a book, a TV show, or a smartphone. What was supposed to be 10 p.m. quickly turns into midnight or even later. People with ADHD are not alone in this experience. Sleep disturbances are among the most common symptoms associated with ADHD and affect both children and adults. Studies estimate that up to 80 percent of people with ADHD suffer from sleep problems at times. The causes are varied: In addition to a disrupted internal clock, the brain’s unique way of processing stimuli, comorbid conditions, or the use of certain medications can also play a role.
1. The internal clock often runs later
Many people with ADHD don’t fall asleep late because they fundamentally need less sleep. Rather, their internal clock often seems to tick differently. Researchers believe that the sleep hormone melatonin is released later in many people with ADHD than in those without the condition. As a result, natural sleepiness often doesn’t set in until a time when others have long since fallen asleep. In everyday life, this can become a real problem. Those who don’t fall asleep until around midnight or even later often still have to get up early the next morning—whether for work, school, or family obligations. This quickly leads to a chronic sleep deficit that can build up over days or weeks. This shifted sleep-wake rhythm is particularly evident on days off. Without an alarm clock, many people with ADHD not only sleep longer but also often go to bed significantly later. This suggests that their natural rhythm is frequently more aligned with the late evening and nighttime hours.
2. The brain has a hard time winding down in the evening
This shifted sleep-wake rhythm is particularly evident on days off. Without an alarm clock, many people with ADHD not only sleep longer but also often go to bed significantly later. This suggests that their natural rhythm is frequently more aligned with the late evening and nighttime hours. In addition, many individuals with ADHD are particularly productive or creative during the evening hours. As soon as the demands of the day subside, it becomes easier to engage with an exciting topic or continue a project they’ve started. As a result, fatigue is often ignored—and the time they fall asleep keeps getting pushed back further and further. This so-called “thought carousel” is therefore far more than mere rumination. It can make it difficult for the brain to enter rest mode, causing it to take significantly longer to fall asleep.
3. Medications and comorbid conditions can affect sleep
Not every sleep disorder associated with ADHD is solely attributable to the condition itself. Other factors can also contribute to sleep disturbances. These include, for example, stimulant medications such as methylphenidate or amphetamines. They can make it harder to fall asleep if taken too late in the day. Therefore, the timing of medication intake should always be coordinated with the treating physician. In addition, people with ADHD are more likely to have comorbid conditions that can further affect sleep. These include, among others, depression, anxiety disorders, restless legs syndrome, or nocturnal breathing disorders such as sleep apnea. If sleep problems persist over a longer period or suddenly worsen, it is therefore important to have other possible causes evaluated by a doctor.
What sleep problems are particularly common in ADHD?
Sleep disturbances can manifest in very different ways in people with ADHD. Some people lie awake for hours before they can even fall asleep. Others fall asleep quickly but wake up repeatedly during the night or feel exhausted the next morning despite having had enough sleep. It is precisely these differences that often make it difficult to immediately recognize the connection between ADHD and sleep problems. In addition, many people with ADHD consider their sleep problems to be “normal” for years. Those who have had trouble falling asleep since childhood or find it hard to get out of bed in the morning often no longer question this pattern at all. In fact, however, there are several sleep disorders that occur particularly frequently in people with ADHD.
1. Delayed sleep onset and a shifted internal clock
One of the most common characteristics is delayed sleep onset. Many people with ADHD don’t start feeling tired until much later than those around them. While others are slowly winding down around 10 p.m., for people with ADHD, this is often when they first enter a phase in which they can concentrate or engage in creative work. This phenomenon is known as delayed sleep phase syndrome. This is not due to a lack of willpower to go to bed earlier, but rather, often, to an altered biological rhythm. Since fatigue sets in later, falling asleep is correspondingly difficult—even when they have to get up early the next morning. In everyday life, this often leads to a constant conflict between the natural sleep rhythm and fixed obligations. After all, work, school, or family life do not conform to an individual’s internal clock. As a result, many people with ADHD consistently get less sleep than their bodies actually need.
2. Difficulty Falling Asleep and Staying Asleep
It’s not just falling asleep that can be a challenge. While some people with ADHD eventually fall asleep, they wake up multiple times during the night or have a hard time falling back asleep after waking up. The causes for this can vary. For some people, a constant stream of thoughts—even at night—means they’re immediately wide awake again after every brief awakening. Others are particularly sensitive to noise or light and therefore sleep more restlessly overall. The more frequently sleep is interrupted, the less time the body has for the important deep sleep and REM phases. Yet it is precisely these sleep phases that are crucial for physical recovery, memory, and processing the day’s experiences.
3. Restful Sleep Is Often Elusive
Many people with ADHD sleep for a sufficient amount of time yet still do not feel well-rested in the morning. Those affected often describe this feeling as particularly stressful because the fatigue cannot simply be offset by a longer night’s sleep. One reason for this may be that their sleep is less restorative. If nighttime rest is frequently interrupted or the individual sleep phases are disrupted, the brain cannot fully regenerate. As a result, concentration, attention, and resilience are already limited first thing in the morning. Especially at work or school, this can quickly lead to a vicious cycle. People who haven’t slept well make mistakes more often, take longer to complete tasks, and generally feel overwhelmed more quickly. This, in turn, increases stress—and it is precisely this stress that can further worsen sleep the following night.
4. Coexisting medical conditions can further impair sleep
This can quickly lead to a vicious cycle, especially at work or in school. People who haven’t slept enough make mistakes more often, take longer to complete tasks, and generally feel overwhelmed more quickly. This, in turn, increases stress—and it is precisely this stress that can further worsen sleep the following night. For example, restless legs syndrome, sleep apnea, and depressive disorders occur more frequently in people with ADHD than in the general population. Chronic stress or anxiety disorders can also contribute to difficulty falling asleep or less restful sleep. That’s why it’s important not to hastily attribute sleep problems solely to ADHD. If symptoms persist over a longer period or worsen significantly, a doctor should always be consulted to determine whether an additional sleep disorder or another medical condition might be present.
How do ADHD and sleep affect each other?
People with ADHD who suffer from sleep problems often feel as though they’re stuck in a vicious cycle. After a restless night, it becomes harder to concentrate or manage daily life. At the same time, these very challenges make it difficult for the brain to wind down in the evening. As a result, ADHD and sleep often influence each other and, in the worst-case scenario, can even exacerbate one another. This isn’t just about fatigue. Restful sleep plays a crucial role in attention, memory, emotional regulation, and the ability to process stimuli—precisely the areas that are often more heavily taxed in people with ADHD anyway.
1. Poor sleep can exacerbate ADHD symptoms
Everyone notices that their concentration wanes after a short night’s sleep. However, for people with ADHD, the effects can be particularly pronounced. Many individuals with ADHD report that after a poor night’s sleep, they lose their train of thought more quickly, forget things more often, or have difficulty focusing on a task. Self-organization often suffers as well. Tasks suddenly seem overwhelming, it becomes harder to set priorities, and even everyday decisions require significantly more energy. What comes easily on a well-rested day can quickly become a challenge after a bad night’s sleep. On top of that, the brain processes information less efficiently when it lacks the necessary rest. This makes it harder to filter out distractions and focus attention specifically on what’s important. For people with ADHD, this often means that existing symptoms become even more noticeable.
2. Emotional resilience also decreases
Sleep affects not only concentration but also our emotions. People who sleep poorly over an extended period often react more sensitively to stress, become irritated more quickly, or feel emotionally exhausted. This effect can be particularly burdensome for those with ADHD. Many people with ADHD already experience intense emotions or have difficulty regulating frustration and tension. When sleep deprivation is added to the mix, it often becomes even harder to respond calmly to challenges or to stay composed in stressful situations. This does not mean that every bad night’s sleep immediately leads to a significant worsening of symptoms. Over weeks or months, however, persistent sleep deprivation can contribute to everyday life feeling more stressful overall. Conversely, ADHD symptoms themselves can make it harder to get a good night’s sleep. Restlessness, racing thoughts, or difficulty mentally winding down at the end of the day often cause people to fall asleep later and later. In addition, many people with ADHD become particularly productive or creative in the evening hours. This can lead to work, hobbies, or new ideas being pursued late into the night—even though the body actually needs rest.
3. A Vicious Cycle That Reinforces Itself
This is precisely where a cycle often begins. Poor sleep leads to a decline in concentration, resilience, and self-organization. As a result, everyday stress increases—for example, because tasks are left undone, appointments are forgotten, or conflicts arise. In the evening, it then often becomes even harder to wind down. Thoughts circle around the past day or the tasks of the next morning, while the brain continues to work at full speed. As a result, falling asleep is delayed once again, and sleep remains unrefreshing. That’s why it’s important to take sleep problems associated with ADHD seriously. Even small improvements in sleep quality can help break this cycle and noticeably reduce the stress of daily life.
The Sleep-Stress Cycle in ADHD
What Can You Do About ADHD and Sleep Problems?
Even though sleep disturbances associated with ADHD can’t always be completely avoided, even small changes in your daily routine can help improve sleep. The key is to develop habits that signal to your body that it’s time to rest.
1. Develop a consistent evening routine
Regular bedtimes help stabilize the sleep-wake cycle. Many people with ADHD benefit from going to bed at roughly the same time every day and waking up at a set time in the morning—even on weekends. A consistent evening ritual can be just as helpful. Reading, listening to calm music, or doing relaxation exercises make it easier for many people with ADHD to transition from an active day to sleep.
2. Reduce screen time and bright light
Smartphones, tablets, or televisions can make it even harder to fall asleep. The bright light from screens inhibits the release of melatonin and signals the brain to stay awake. It may therefore be helpful to avoid screens as much as possible for about two hours before bedtime, or at least to significantly reduce the brightness. Dimmed lighting in the evening helps the body prepare for nighttime.
3. Time Medications Correctly
For many people with ADHD, stimulants are part of their treatment. However, if taken too late in the day, they can make it harder to fall asleep. Therefore, you should never change the dosage schedule on your own. If you feel that your medication is affecting your sleep, you should discuss this with your doctor.
4. Seek Medical Help for Persistent Sleep Problems
Not every sleep disorder is exclusively related to ADHD. If the symptoms persist over a longer period or are accompanied by symptoms such as severe daytime sleepiness, breathing pauses, or a pronounced urge to move the legs, the cause should be evaluated by a doctor. Depending on the trigger, specialized sleep clinics or an adjustment to ADHD treatment can help improve sleep quality in the long term.
5. Medicinal plants can provide additional support for sleep
In addition to good sleep hygiene, many people with ADHD are also interested in naturopathic options. In traditional folk medicine, various medicinal plants are used to alleviate inner restlessness and promote sleep.
Medicinal plants frequently used in spagyric medicine include, among others:
- Passionflower (Passiflora incarnata): Traditionally used for inner restlessness and nervous tension, it can help you fall asleep.
- Valerian (Valeriana officinalis): One of the best-known medicinal plants for promoting relaxation and sleep.
- Hops (Humulus lupulus): Often combined with valerian and traditionally used for problems falling asleep and staying asleep.
- Lavender (Lavandula angustifolia): Can help reduce inner tension and promote relaxation in the evening.
- Oats (Avena sativa): Traditionally used in naturopathy to support the nervous system and treat nervous exhaustion.
