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Sleep & Insomnia

Understanding why good sleep is foundational to mental health

Sleep is not a luxury — it is a biological necessity as important as nutrition and exercise. During sleep, the brain consolidates memories, clears metabolic waste, and regulates emotions. Chronic sleep deprivation increases the risk of depression, anxiety, heart disease, and obesity. Insomnia affects approximately 10–30% of adults globally and is the most common sleep disorder.

🔍 Symptoms

Insomnia Symptoms

Difficulty falling asleep (sleep-onset insomnia)
Frequent waking during the night
Waking too early and unable to return to sleep
Non-restorative sleep — feeling unrested despite sleeping
Daytime fatigue and impaired functioning

Daytime Impact

Difficulty concentrating and memory problems
Mood disturbances — irritability, anxiety, depression
Reduced performance at work or school
Increased risk of accidents
Physical health effects — immune function, metabolism

🔬 Causes & Contributing Factors

Psychological Factors

Stress, anxiety, depression, and hyperarousal (racing mind) are the leading causes of insomnia.

Poor Sleep Hygiene

Irregular sleep schedules, excessive screen use before bed, caffeine, alcohol, and an unsuitable sleep environment.

Medical Conditions

Pain conditions, sleep apnoea, restless leg syndrome, and various medications can disrupt sleep.

Life Events

Major life changes, travel (jet lag), shift work, and aging all affect sleep architecture.

Treatment Options

Always discuss treatment options with a qualified healthcare professional.

CBT for Insomnia (CBT-I)

therapy

The most effective treatment for chronic insomnia — more effective than medication long-term. Addresses underlying beliefs and behaviors.

Sleep Restriction Therapy

therapy

Temporarily limits time in bed to consolidate sleep and build sleep pressure.

Sleep Hygiene

lifestyle

Consistent schedule, cool dark room, limiting screens and caffeine, relaxing pre-sleep routine.

Relaxation Techniques

self-help

Progressive muscle relaxation, body scan meditation, and deep breathing reduce pre-sleep hyperarousal.

Medication (short-term)

medical

Hypnotics can be useful short-term but are not recommended for chronic insomnia. Discuss with your doctor.

💡 Myths vs. Facts

You can 'catch up' on sleep over the weekend.

Weekend sleep recovery partially compensates but does not fully reverse the cognitive and health effects of sleep deprivation.

Alcohol helps you sleep.

Alcohol helps you fall asleep faster but severely disrupts sleep architecture, particularly REM sleep, leaving you less rested.

Lying in bed even if you can't sleep is restful.

Lying awake in bed can worsen insomnia by conditioning the brain to associate bed with wakefulness. CBT-I addresses this directly.

Everyone needs 8 hours.

Sleep needs vary by person. Most adults need 7–9 hours, but the right amount is whatever allows you to function well without daytime sleepiness.

Related Assessments

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Insomnia Severity Index

3 min

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Fatigue Assessment

4 min

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PHQ-9 Depression