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What Are The Causes and Symptoms of Insomnia?

Published: Dec 17, 2020
Updated: Jan 18, 2025
What Are The Causes and Symptoms of Insomnia?
In this article
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    10 min

    Insomnia is one of the most common sleep disorders that affects up to one-third of adults at any given point in time. It’s the inability to fall asleep or stay asleep no matter how long you’ve laid in bed and there are some reasons to explain why that happens.

    In this article, we’ll look at the common insomnia causes, symptoms, and how to better cope with this condition.

    Key Takeaways
    Insomnia is a common sleep disorder that affects up to one-third of adults globally.
    It is defined as trouble falling asleep, staying asleep or both.
    Common causes of insomnia include stress, jet lag, anxiety, depression, noise, poor sleep environment or consuming caffeine.
    Symptoms of insomnia may be trouble falling asleep at night, excessive daytime sleepiness, trouble staying asleep, irritability, trouble concentrating, and more.
    You can cope with insomnia by mainly practicing good sleep hygiene and cultivating good sleep habits.

    What is Insomnia?

    woman looking wide awake in bed and having symptoms of insomnia with a clock by the beside showing that it is 2am in the morning

    Insomnia can be defined as having trouble falling asleep, trouble staying asleep, or both [1]. It is a common sleep disorder that affects many adults and can be categorized into two forms— acute insomnia and chronic insomnia.

    Acute insomnia (short-term insomnia) refers to insomnia episodes that may last for up to a few days while chronic insomnia refers to ongoing sleep problems that last for 3 months or longer. It’s also usually diagnosed by a doctor.

    What Causes Insomnia?

    causes of insomnia shuteye

    Many different factors can cause insomnia, including lifestyle factors or mental health conditions.

    Some of the most common causes include:

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    Causes of insomnia in females

    causes of insomnia in female due to hormones

    While insomnia affects just about anyone, a study has found that there’s a higher likelihood (up to 58%) of females experiencing insomnia compared to males [2]. Multiple factors contribute to this data.

    The most distinct factor is hormones. Females have two major hormones, progesterone, and estrogen that are responsible for regulating the biological functions of the body. Throughout a female’s life, it goes up and down continuously, affecting sleep [3].

    Additionally, pregnancy and postpartum can also lead to poor sleep quality. Sleep difficulties are found to be common during pregnancy, affecting almost 80% of pregnant women during the third trimester of pregnancy [4]. In the later stages of a woman’s life, she may develop menopause, changing sleep patterns and affecting sleep quality as a result.

    Risk Factors

    woman working shift job and staring at laptop late at night, risk factor of insomnia

    Not everyone will be at risk for insomnia but certain groups of people may find themselves at an increased risk for developing insomnia symptoms in comparison to those who don’t.

    Common risk factors include [5]:

    • Individuals with an irregular sleep-wake schedule
    • Those who do shift work
    • People with other sleep disorders (e.g. restless leg syndrome, sleep apnea)
    • People with mental health conditions (e.g. anxiety, depression)
    • Genetic predisposition
    • Older adults

    Common Insomnia Symptoms

    Insomnia symptoms can vary from person to person but the most common symptoms that have been reported by people with insomnia include the following [6]:

    • Trouble falling asleep at night, for an extended period
    • Excessive daytime sleepiness or fatigue
    • Not feeling refreshed upon waking
    • Trouble staying asleep
    • Irritability, depression, or anxiety
    • Difficulty concentrating
    • Increased errors or accidents
    • Headaches
    • Digestive issues caused by sleep deprivation

    If you are experiencing insomnia symptoms that are affecting your overall quality of life, you may want to consider consulting a sleep specialist. Your sleep specialist will collect your past sleep history and may propose doing a sleep study to properly diagnose insomnia.

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    5 Ways to Cope with Symptoms of Insomnia

    Insomnia symptoms can get better if you choose to practice good sleep habits. Here are five effective ways to help you cope with insomnia and improve the quality of your sleep.

    1. Practicing good sleep hygiene

    There are many ways to cultivate good sleep hygiene practices or habits so that you can enjoy a restful sleep. These practices include establishing a consistent sleep schedule, creating a sleep-friendly environment by ensuring it’s dark, cool, and quiet, limiting screen time before bed, and avoiding too many daytime naps.

    Small habits like not sleeping right after a meal or avoiding caffeine close to bedtime can also help to make a difference.

    2. Incorporate meditation into your bedtime routine

    silhouette of woman sitting above water and meditating against the background of pink skies

    Sometimes, insomnia can be caused by too much stress, worry, or anxiety. Incorporating guided meditation exercises or deep breathing exercises can help you bring awareness to the present moment and release all of the tension you’re carrying.

    When you are in a relaxed and calm state, it is much easier for you to fall asleep and stay asleep at night.

    3. Get out of bed if you can’t fall asleep

    This may come as a surprise but staying in bed if you’re already struggling to fall asleep is not going to do you any good!

    Trying to force yourself to go to bed will only create more stress, exacerbating the problem further. If you can’t seem to fall asleep within 20 minutes or so, it’s a good sign to get out of bed. Try going to a different room or doing a relaxing activity until you start to feel tired.

    4. Use sleeping pills if necessary

    sleeping pills on the bedside table can help to cope with symptoms of insomnia

    If trying several home remedies does not seem to help, you can consider the use of sleeping pills or supplements like melatonin. In the short term, using it may help but you are still advised to seek advice from a healthcare professional before consuming anything.

    It’s also recommended to avoid using them as a long-term solution to prevent dependency.

    5. Seek professional help

    You can also consider seeking professional help from a certified sleep specialist if you’ve exhausted all self-care strategies. Identifying the root cause of your insomnia and taking steps to address it can help you work on and reduce these symptoms.

    Also, there are treatment options such as cognitive behavioral therapy for insomnia (CBT-I) which your doctor may recommend based on severity.

    How effective is CBTI?

    CBT-I is a very effective treatment for insomnia; symptoms remit in 80% of patients who undergo this treatment. Furthermore, the benefits of CBT-I are more sustained than other kinds of treatment such as medication, with lower rates of relapse over time.

    Conclusion

    In conclusion, anyone can experience insomnia and find it hard to sleep or stay asleep at any point in their lives. It could be due to stress, anxiety, poor sleep habits, or other lifestyle factors. Practicing good sleep hygiene and incorporating other self-care strategies can help you to better cope with these symptoms so that you may hopefully get better rest.

    If you experience difficulty falling asleep at night, you may want to consider using the ShutEye® app as part of a self-care strategy. ShutEye® is an advanced sleep-tracking app that tracks your sleep cycles, offering personalized recommendations to help you improve your sleep quality. Try it for FREE today!

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    FAQ

    Lifestyle factors such as stress, poor sleep habits, nonconducive sleep environment, or mental health-related conditions are most likely to cause insomnia.

    The most effective remedy for insomnia would be cognitive behavioral therapy for insomnia (CBT-I). However, natural remedies such as having a consistent sleep schedule, avoiding caffeine before bed, and meditating are examples that can help with insomnia symptoms.

    Insomnia is not determined by the number of hours slept but rather by the quality of rest that you had. It's how well-rested you feel upon waking and whether you're able to fall asleep at night without much trouble.
    About authors
    Dr. Cui is a board-certified internal medicine physician and applied psychologist with more than 30 years of experience in both fields especially in terms of the regulation and intervention of sleep disorders.
    Dr. Julian Lim is regarded internationally as an expert in mindfulness and sleep, with over 40 peer-reviewed publications and a position on the editorial board of the scientific journal Mindfulness. He is currently an Adjunct Professor at the Centre for Sleep and Cognition at the National University of Singapore.

    Chen, J. (2017) Women, Are Your Hormones Keeping You Up at Night? [online]. Available at: https://www.yalemedicine.org/news/women-are-your-hormones-keeping-you-up-at-night

    John Hopkins Medicine (2025) Insomnia [online]. Available at: https://www.hopkinsmedicine.org/health/conditions-and-diseases/insomnia

    Penn Medicine (2022) Insomnia [online]. Available at: https://www.pennmedicine.org/for-patients-and-visitors/patient-information/conditions-treated-a-to-z/insomnia

    Smyka, M., Kosińska-Kaczyńska, K., Sochacki-Wójcicka, N., Zgliczyńska, M., & Wielgoś, M. (2020). Sleep Problems in Pregnancy—A Cross-Sectional Study in over 7000 Pregnant Women in Poland. International Journal of Environmental Research and Public Health17(15)5306. Available at: https://doi.org/10.3390/ijerph17155306

    Stanford Medicine (2024) Who Is at Risk for Insomnia? [online]. Available at: https://stanfordhealthcare.org/medical-conditions/sleep/insomnia/causes/who-is-at-risk.html

    Zeng, L., Zong, Q., Yang, Y., Zhang, L., Xiang, Y., Ng, C. H., Chen, L., & Xiang, Y. (2020). Gender Difference in the Prevalence of Insomnia: A Meta-Analysis of Observational Studies. Frontiers in Psychiatry, 11, 577429. Available at: https://doi.org/10.3389/fpsyt.2020.577429

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