Sleep: the invisible foundation of mental health

We live in a society that often uses exhaustion as a badge of honor. How often do we sacrifice precious hours of rest for the sake of meeting yet another deadline, watching yet another episode of a series, or spending a few more minutes on social media?

We realize that, in a world that spins at a relentless pace, the act of stopping and sleeping is often seen as a waste of time or a sign of unproductivity. However, just as a house cannot stand without solid foundations, our mental health cannot survive without its most basic foundation: sleep.

It's not just about “recharging your batteries.” Sleep is an active and complex biological process, essential for us to be able to regulate our emotions, make thoughtful decisions, and maintain our mental integrity the next day.

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The Relationship Between Sleep, Mood, and Cognition

Have you noticed how, after a bad night's sleep, the world seems more hostile? Small setbacks become Sisyphus' mountain, and patience with others evaporates.

This isn't “bad temper,” it's neuroscience. During sleep, our brain processes and organizes the memories and emotions of the day. According to a study published in the National Library of Medicine, sleep deprivation directly affects the prefrontal cortex (responsible for logical reasoning) and increases the reactivity of the amygdala (the emotional center of the brain) [1].

In other words, without sleep, we lose our ability to manage our emotions. Anxiety increases, mental clarity decreases, and we enter a survival mode that wears down our well-being.

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Sleep Hygiene: More than just “counting sheep”

Often, when we feel lost in the darkness of insomnia, we try to “force” sleep. But sleep is like a shy bird. If we chase after it, it flies away, but if we create the right environment, it lands.

“Sleep hygiene” refers to a set of practices that prepare the body and mind for rest. These are not strict rules, but rather self-care rituals.

• Regularity: our bodies love routine. Trying to go to bed and wake up at the same time helps regulate your biological clock.
• Disconnect from the digital world: the blue light from screens “tricks” the brain into thinking it is still daytime.
• Your bedroom as a sanctuary: the space where you sleep should be associated only with rest and intimacy, not work or worry.

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When does a clinical evaluation make sense?

It's important to recognize that sometimes sleep hygiene tips are not enough. If difficulty falling asleep (or staying asleep) persists for more than three months and interferes with your daily functioning, you may be facing a situation that requires clinical evaluation.

Many sleep disorders are actually symptoms of something deeper. Anxiety, depression, and burnout often go hand in hand with insomnia. Anxiety keeps us awake, and lack of sleep increases anxiety.

It is at times like these that professional intervention becomes crucial. Ignoring the problem or systematically resorting to medication without monitoring is like putting a band-aid on a deep wound.

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Rebuilding the foundation at the Clínica Hippocampus

At the Clínica Hippocampus, in Lisbon, we view sleep disorders not as an isolated problem, but as an integral part of your medical and emotional history.

Psychological intervention, particularly through cognitive-behavioral approaches, is considered the first line of treatment for insomnia. The goal is twofold:

1. Deconstruct beliefs: relieve pressure and fear of “not being able to sleep.”
2. Regulate the system: find tools to calm the hyperactive mind.

It is important to remember that sleeping well is an act of respect for your own body and mind. If you feel that your nights have become a battlefield, you don't have to face them alone.

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Bibliographic References

[1] Hyndych A, El-Abassi R, Mader EC Jr. The Role of Sleep and the Effects of Sleep Loss on Cognitive, Affective, and Behavioral Processes. Cureus. 2025 May 16;17(5):e84232. doi: 10.7759/cureus.84232. PMID: 40525051; PMCID: PMC12168795.



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