Your sleep can affect your mental health in a number of ways.
Rest is important for the mind -- which is why you feel so foggy and unfocused after a few nights of bad sleep. It's not just tiredness, though. Sleep deprivation can have significant mental health impacts, from focus to mood.
Here, we'll explore the importance of sleep for mental health. For other tips on sleep and wellness, check out why you might want to stop sleeping with your pet and when to replace your mattress.
Generally, we should all get at least seven hours of sleep each night. However, life can get busy and late nights, and early alarms creep in. According to the Cleveland Clinic, 70 million Americans struggle with a sleep disorder like insomnia.
This adds up to more than fatigue. The Centers for Disease Control and Prevention found that sleep deprivation makes you 2.5 times more likely to deal with mental distress.
How does sleep affect mental health in such a significant way? It all comes down to what your brain does while you rest. (Hint: it's a lot.) As you snooze, your brain:
Without enough sleep, you lose brain plasticity, which means your brain can't adapt to stimuli the way it should. This brings us back to the connection between mental health and sleep. When your brain can't solidify memories or learn new things, you don't feel great mentally.
Let's dig into specific ways that the lack of sleep translates into mental health challenges.
Prolonged sleep deprivation takes a toll on your ability to regulate your emotions. You might have experienced the following scenario: you slept terribly the night before, and the next day you feel like you could cry or have an angry outburst.
Studies show that lack of sleep negatively impacts our moods. It can make you more prone to anger and emotionally reactive in general. Those mood changes don't just make you feel off-kilter as you go about your day. They can impact your decision-making ability, too.
A 2017 study found that sleep deprivation makes us more sensitive to stressful stimuli and emotionally aroused. Sleep is integral to our ability to manage our emotions and everyday stressors.
When you aren't getting the sleep you need, interacting with the world feels more difficult -- because it is. Go too long without sleep and you can even start hallucinating. Sleepless nights directly impact how you perceive what's going on around you. Being sleep-deprived can change how you interpret situations and, consequently, how you respond to them.
Sleep impacts how we see the world, as well. One study showed that not getting enough sleep can change how we see color.
Sleep and stress have an interesting relationship. Being stressed can make it harder to get high-quality sleep. But a lack of sleep can make you more stressed.
In a recent survey, the American Psychological Association found that 21% of adults reported an uptick in their stress levels when they weren't getting enough sleep. If you're already stressed, the issue compounds. A whopping 45% of people who reported high stress levels going into the survey said lack of sleep increased their stress even more.
Many respondents reported other stress-inducing adverse effects of bad sleep, including:
Sleep deprivation makes it harder for your brain to form memories, stay focused and learn new things. That tired feeling that comes with a lack of good sleep often translates to brain fog that can interrupt your day.
In fact, if you've been struggling with concentration, check your sleep habits. Research shows that sleep deprivation can make your reaction times longer and make it harder for you to pay attention.
Lack of sleep is also associated with attention-deficit/hyperactivity disorder. The relationship between ADHD and sleep is pretty complex and bidirectional: People with ADHD may experience disordered sleep, and those who struggle to get quality sleep may experience ADHD symptoms.
As we mentioned before, sleep doesn't necessarily mean your body and brain power down. In fact, your system uses the time you're asleep to do some critical work. That includes some key hormonal processes.
Specifically, all of these hormones go to work while you sleep:
Since your hormones control a wide range of things in your body — many of which directly impact how you feel — this matters for both your mental and physical wellness.
The flip side of this is also true. A hormone imbalance can cause sleep issues, a problem that's particularly common in women going through menopause. If you've been dealing with persistent insomnia, talk to your doctor. In some cases, correcting a hormonal imbalance unlocks consistent, high-quality sleep.
There's a clear connection between the lack of sleep and mental health. But if you already have a mental illness -- or even dealing with some of the symptoms of one -- sleep gets extra important.
Why? Let's look at the circular relationship between sleep and a few specific mental illnesses:
If you're dealing with persistent sleep problems paired with the symptoms of a mental health condition, talk to a professional.