The Link Between Sleep and Anxiety, and Where CBD Fits

Last updated: October 2026.

If you have ever lain awake at 3am with your mind running through tomorrow’s problems, you already know that worry and sleep are closely linked. Anxiety makes it harder to fall asleep and stay asleep, and a bad night makes the next day’s worries feel bigger.

This guide explains why the two are connected, what you can do tonight to break the cycle, where CBD does and does not fit, and when to seek extra support. It is general information, not medical advice.

The short answer

• Anxiety and sleep problems feed each other: worry keeps the body alert, and poor sleep makes the brain more reactive to stress.
• Practical techniques such as a worry list, slow breathing and getting out of bed when you cannot sleep help many people.
• Some people include CBD in a calming evening routine, but research is early and CBD is not a treatment for anxiety or insomnia.
• If anxiety or poor sleep is affecting your daily life, talk to your GP. CBT is effective for both and is available in Ireland.

Why anxiety and sleep are connected

Anxiety is the body’s alarm system. When you feel threatened, your brain triggers a stress response: heart rate rises, muscles tense, and stress hormones such as adrenaline and cortisol increase. That response is useful when you need to act quickly, but it is the opposite of the calm, safe state the body needs to fall asleep.

Sleep then affects anxiety in return. Research using brain imaging has found that after a short night, the brain’s emotional centre, the amygdala, tends to react more strongly to negative images, while the areas that help regulate emotion are less active. In plain English, tiredness turns up the volume on worry. We explain more about the brain side of this in the science of anxiety.

The anxiety and sleep cycle

• You go to bed worried about something.
• Your body stays alert and you take longer to fall asleep.
• You start worrying about not sleeping, which adds a second layer of anxiety.
• You sleep poorly and wake tired.
• The next day, stress feels harder to manage, and the cycle repeats.

Many people find the second layer, worry about sleep itself, becomes the main problem over time. The good news is that this cycle can be interrupted at several points.

What you can do tonight

Before bed

• Write a worry list early in the evening. Note each concern and one small next step, then close the notebook. It tells your brain the problem is “parked”.
• Create a buffer zone. Spend the last 30 to 60 minutes away from email, news and social media.
• Keep the lights low. Dim light helps the body prepare for sleep.
• Avoid alcohol as a sleep aid. It may help you nod off, but it disrupts sleep later in the night and can increase anxiety the next day.

In bed

• Slow your breathing. Breathe in gently for four counts and out for six. Longer out-breaths help the body shift toward a calmer state. Our breathing techniques guide has more options.
• Try a body scan. Move your attention slowly from your feet to your head, relaxing each area.
• Use a “boring” thought task. Name an animal for every letter of the alphabet, or picture a familiar walk in detail.
• Get up if you are awake for about 20 minutes. Go to another room, read something calm in low light, and return when sleepy.

During the day

• Keep a consistent wake time, even after a bad night.
• Get morning daylight; it helps set your body clock.
• Move your body, ideally outdoors. Even a 20-minute walk helps many people.
• Keep caffeine to the morning; it can heighten feelings of anxiety.
• Schedule a short “worry time” in the afternoon so worries have a place other than bedtime.

Night-time anxiety in different situations

Anxiety at night does not look the same for everyone. Recognising your pattern helps you choose what to try first.

• Trouble falling asleep. Usually linked to a racing mind at bedtime. Focus on the worry list, the buffer zone and slow breathing.
• Waking at 3 or 4am. Common during stressful periods and after alcohol. Keep the clock turned away, use a calm thought task, and avoid checking your phone.
• Waking with a jolt or racing heart. Sometimes linked to stress, caffeine or alcohol. If it happens often, mention it to your GP so they can check for other causes.
• Dreading bedtime. A sign that bed has become linked with worry. CBT for insomnia is designed for exactly this.

Life events that disrupt sleep

Exams, a new baby, a job change, money worries, a bereavement or a relationship ending can all disrupt sleep for a while. Short-term poor sleep in these situations is a normal human response, and it usually settles as life does. Be kind to yourself, keep the basics in place as best you can, and lean on the people around you. If the disruption continues long after things have settled, that is the time to look for extra support.

Supporting someone else

If a partner, friend or family member is struggling with anxiety and sleep, simple things help: listening without trying to fix everything, encouraging them to see their GP, and helping keep evenings calm. Avoid pushing alcohol or sleeping tablets that are not prescribed for them. If you are worried about their safety, encourage them to contact Samaritans or their GP, and call 112 or 999 in an emergency.

Where does CBD fit?

Many people tell us they include CBD in their evening routine because they find it a calming part of winding down. Research on CBD, anxiety and sleep is still early. Some small studies have explored CBD in anxiety-provoking situations such as public speaking, and some have included sleep measures, with mixed findings. Studies are small and short, and CBD is not an approved treatment for anxiety or insomnia. CBD is sold in Ireland as a food supplement and we make no claims that it treats, cures or prevents any condition.

If you choose to try it, start with a low serving, take it at the same time each evening, and stay within the label’s guidance. Our dosing guide explains how. Customers often choose our CBD Oil 10% (1000mg) or CBD Oil for Sleep with free reishi for evening use. You can try a 2ml sample for €2 before committing to a full bottle.

CBD can interact with medication, including antidepressants, anti-anxiety medicines, sleeping tablets and epilepsy medication. Always check with your GP or pharmacist first if you take any medication, and do not stop prescribed medication without medical advice. Avoid CBD in pregnancy and breastfeeding.

Treatments with the strongest evidence

Approach	What it involves
CBT for insomnia (CBT-I)	A structured programme over 4 to 8 sessions that changes sleep habits and thoughts about sleep. Recommended first-line treatment for long-term insomnia.
CBT for anxiety	Helps you notice and change anxious thought patterns and avoidance. Available through GPs, HSE services, psychologists and online.
Regular exercise	Consistently linked with better mood and sleep.
Mindfulness-based approaches	Courses and apps that teach attention and relaxation skills.

When to get help

See your GP if anxiety or poor sleep lasts more than a few weeks, affects your work, relationships or ability to cope, or if you are using alcohol or other substances to manage it. Panic attacks, constant worry, or feeling unable to switch off at all are all good reasons to talk to someone.

If you are in crisis or thinking about harming yourself, please reach out now. In Ireland you can call Samaritans free on 116 123 at any time, text HELLO to 50808 for the free 24/7 text service, or call 112 or 999 in an emergency. You do not have to manage this on your own.

Frequently asked questions

Can anxiety cause insomnia?

Yes, anxiety is one of the most common reasons people struggle to fall or stay asleep, because it keeps the body in an alert state.

Can poor sleep make anxiety worse?

Yes. Research suggests that sleep loss makes the brain react more strongly to stress and negative emotions.

Does CBD help with anxiety?

Research is at an early stage and CBD is not an approved treatment for anxiety. Some people include it in a calming routine. Talk to your GP about anxiety that affects your daily life.

Is it safe to take CBD with antidepressants?

Do not combine them without checking with your GP or pharmacist, as CBD can interact with some medications.

What should I do if I wake at 3am worrying?

Keep the lights low, try slow breathing, and if you are still awake after about 20 minutes, get up and do something calm until you feel sleepy.

How long does CBT for insomnia take?

Usually four to eight weekly sessions, either in person or through a structured online programme.

Should I avoid caffeine if I have anxiety?

Many people find caffeine increases feelings of anxiety and disrupts sleep. Keeping it to the morning, or cutting down, is worth trying.

Disclaimer: CBD is sold as a food supplement. It is not intended to diagnose, treat, cure or prevent any disease and is not a substitute for medical advice. Always consult a healthcare professional before starting a new supplement, especially if you take medication, are pregnant or breastfeeding.