Memory Problems & Brain Fog in Teens: Causes and Solutions
Whether you often lose your train of thought, find it hard to follow conversations, or struggle to focus in the classroom, memory problems and brain fog can be more than a little frustrating. They can affect everything from your performance in school and extracurricular activities to your relationships and self-esteem.
Since memory problems can significantly impact your life and sense of well-being, it is a good idea to take them seriously. In this article, we’ll cover the following:
- Understanding memory problems and brain fog in teens
- Signs of brain fog and memory problems
- Risk factors and causes of memory issues in teens
- Support options for teen memory problems and brain fog
- Coping strategies for memory problems in teens
Understanding Memory Problems and Brain Fog in Teens
Memory problems and brain fog can show up in different ways for teens. Below, we explore some of the main forms of memory problems teens may experience.
What Does ‘Forgetfulness’ Mean?
Forgetfulness and brain fog are related, but not synonymous – forgetfulness can be one of several symptoms of brain fog. But what is forgetfulness?
We all have moments of forgetfulness from time to time. You may forget to pack your gear for an after-school soccer practice. Or you forget to visit your Math teacher during Study Hall to get your makeup work after an absence. These types of occasional forgetfulness can be normal, especially in today’s busy and fast-paced daily schedules.
Forgetfulness can be a cause for concern, though. If you’re often missing practices or appointments, if you’re forgetting or misplacing things so frequently that others notice, or if you feel like your memory problems are impacting your daily life, there may be something more going on.
What Is Brain Fog?
You may have first heard the term “brain fog” during the COVID-19 pandemic, as it was often listed as one symptom of the virus. But what exactly does brain fog look like?
Even though brain fog is associated with various risk factors, ranging from sleep deprivation to underlying mental health problems, the experience tends to be described in much the same way. Brain fog is commonly described as:
- a sense of confusion
- hazy thinking
- a feeling of mental slowness
- trouble remembering familiar words or names
- forgetfulness
- difficulty completing multi-step tasks, such as following a recipe
- trouble following conversations
- an inability to concentrate or focus2
Signs of Brain Fog and Memory Problems in Teens
- It’s hard for you to follow along with teachers’ lessons.
- You struggle to remember what was just taught in class.
- Parents, teachers, or coaches often have to repeat instructions.
- You frequently forget where you’ve left items such as your keys, water bottle, or phone.
- It’s hard for you to keep up with a conversation.
- You often get lost in familiar places.
- You call your friend to ask a question, but forget to ask the question.
- You forget to buy the specific item you went to the store to buy.
Risk Factors and Causes of Memory Issues in Teens
Research has identified many potential causes of memory issues in teens. From lifestyle choices to underlying mental health problems such as ADHD, here is an overview of common causes of cognitive difficulties in teens.
1. Poor Sleep
If you’re experiencing brain fog or forgetfulness, we recommend considering whether you’re getting enough sleep. When it comes to sleep, both quality and quantity matter.
The National Sleep Foundation indicates that teens need eight to ten hours of quality sleep per night, yet most struggle to sleep even seven hours. Research consistently demonstrates that adolescents who get less than eight to ten hours of sleep are more likely to experience memory problems, be less alert, and have slower mental processing speeds. Even one night of inadequate sleep can contribute to brain fog in adolescents.3
2. Poor Nutrition
Teen memory problems can relate to subpar nutrition. What you put into your body affects your cognition, including your mental alertness and memory. During your teenage years, you may enjoy more independence in various aspects of life, including what, when, and where you eat your meals. Although you may be making more of your own choices when it comes to food and drink, it’s not always easy to fully understand the health impacts of those choices.
According to research, many factors impact the quality of nutrition for adolescents. Eating meals and snacks outside the home, consuming more highly processed foods, and even being influenced by what you see your friends eating can make it harder to get the quality nutrition your brain and body need. Getting too few of the necessary vitamins and minerals, and getting too many highly processed foods, have been linked to memory problems, impaired attention, and learning challenges.4
3. Stress
If you’re among the 32% of teens who report experiencing stress during the school year, it may be worthwhile to examine whether that stress is at the root of your memory problems.5 Stress directly interferes with thinking, attention, and memory, according to research.6 It can also indirectly affect memory by making it more challenging to get a good night’s sleep.
4. Excessive Screen Time
Did you know that excessive screen time increases your chances of cognitive difficulties? Research shows that adolescents who use screens recreationally for more than three hours per day are much more likely to report cognitive difficulties, such as memory problems.1 Other research has shown that teens who watch TikTok reels report more mental fatigue and difficulty concentrating than teens who don’t.7
5. ADHD and Mental Health Problems
If you frequently forget or misplace items, have trouble concentrating on tasks, and struggle to follow along with class lectures, it may be worthwhile to explore whether ADHD could be sitting underneath your memory difficulties. People with ADHD tend to experience brain fog, confusion, mental cloudiness, difficulty making decisions, and forgetfulness.8 ADHD and memory issues in teens can be addressed through medications and/or ADHD therapy. You can read more about ADHD, diagnosis, and treatment options here.
Brain fog or forgetfulness can also be symptoms of mental health problems such as anxiety, depression, and trauma.9
6. Smoking, Alcohol, and Marijuana Use
Evidence suggests that smoking, drinking alcohol, and using marijuana all affect short-term memory, long-term memory, and decision-making abilities. In fact, they may physically alter the development of the adolescent brain, and these effects can be permanent. If you are struggling with the use of drugs or alcohol, it is advisable to seek support and stop using these substances as soon as possible to minimize their impact on your mental and physical health.10
7. Medications and Certain Illnesses
Some common medications, including some antidepressants and antihistamines, can lead to brain fog and memory problems. Illnesses such as COVID-19 and long COVID have also been linked to these cognitive issues. If you are taking any medications, if you have a history of COVID-19, seasonal allergies, or other illnesses, it may be wise to discuss your cognitive difficulties with your doctor.
Early Intervention for Cognitive Difficulties in Adolescents
Forgetfulness and brain fog can impact your academic performance, affect your ability to achieve extracurricular goals, disrupt your social life, and negatively affect your self-esteem. In other words, these cognitive difficulties can have a profound impact on your overall sense of well-being. Early intervention is key to getting a handle on cognitive challenges such as brain fog or memory problems.
Lifestyle Changes
Lifestyle changes may dramatically improve your mental health and memory. These changes may include:
- Prioritizing sleep. Aim for the recommended eight to ten hours of sleep per night during your teens. This may require other lifestyle changes, such as avoiding screens for an hour before bedtime.
- Cleaning up your diet. Increase your intake of whole, unprocessed foods. Hungry? Look for fresh snacks you might find in the refrigerator, like grapes and carrots. Minimize highly processed foods, such as shelf-stable, prepackaged items you might find in your pantry.
- Managing stress. Consider reducing the number of activities or commitments you’re involved with. Get plenty of exercise and fresh air. Journal, meditate, or talk to a trusted friend or therapist to help you cope.
- Involving your parents. Seek parental support for memory struggles, brain fog, and overwhelm. Your parents can offer a listening ear, help you follow through with making lifestyle changes, or connect you with professional help.
Medication
When you seek professional support to better understand your cognitive difficulties, you may find that medication can improve your symptoms. A professional could determine, for example, that ADHD, or even chronic pain, is the true source of your brain fog. In either of these cases, medication may be an option available to you.
Therapy For Memory Problems
Therapy can help you tackle your memory problems and brain fog directly or indirectly. Behavioral therapy, for example, can help you develop skills aimed at improving focus in adolescents. Strategies designed to enhance day-to-day functioning can help minimize brain fog and its impact on your life.
Another option, family therapy, may help you and your parents work together to establish healthy routines and follow through with making lifestyle changes.
Therapy can effectively treat stress-related memory problems. For example, if anxiety, depression, or trauma are at the root of your cognitive difficulties, working with a therapist may help identify and treat those underlying conditions. At Mission Prep, we’re prepared to help teens enhance their mental health and sense of well-being.
Coping Strategies for Memory Issues in Teens
Ultimately, you may find that a combination of lifestyle changes, therapy, or medication helps you beat brain fog for good. In the meantime, here are some coping strategies that may help you overcome memory difficulties.
- Rely on routines. For tasks that you perform frequently, such as getting ready for school each day, follow the same steps in the same order, every time. Soon you will be able to go through the steps on “autopilot”, so you won’t have to try so hard to remember what to do next.
- Designate one space for important items. Develop a habit of storing essential items in one designated spot. If you always place your car keys on the same shelf by your front door, you won’t have to search for them when you’re in a rush to get out the door. You can do the same for your cell phone, your book bag, your sports equipment, and so on.
- Simplify your daily life. Take a look at your activities and responsibilities. Are you simply involved in too many things? Consider reducing your daily activities. Are there activities that you signed up for just because a friend was going to do them? Consider taking a break from the nonessentials, so you have mental space for the things that matter most to you.
- Reduce stimulation. Take steps to remove items you don’t need, whether it’s from your bedroom, your bookbag, your locker, or the trunk of your car. Turn off the TV when you’re not actively watching it, and put your phone on a shelf when it’s not in use. Complete your schoolwork in a decluttered, quiet space.
- Make to-do lists. You can use the Notes app on your phone, a small notebook that travels with you, or a whiteboard in your bedroom. Write down the tasks you need to complete, and check them off as you finish each one. This releases you from the need to hold all of your to-do list in your memory while you go about your day.
- Prioritize tasks by order of necessity. Take action on the most important, critical tasks first, before you feel too exhausted. Note the most important tasks on your to-do list by adding a star, highlighting them, or placing them higher on the list.
Mission Prep: Get Adolescent Mental Health Support
At Mission Prep, we understand that the teenage years can feel overwhelming. Memory problems and brain fog can make difficult tasks feel impossible. You don’t have to go through this alone. Here at Mission Prep, we specialize in teen mental health. We’re here to help you identify the root of your brain fog and develop a treatment plan that works for you.
We offer everything from structured outpatient services to residential treatment programs specifically designed to help teens regain control of their mental health. If you’re ready to tackle your brain fog and memory problems, simply reach out to us. We’re prepared to walk with you every step of the way.
References
- Onyeaka, H. K., Muoghalu, C., Baiden, P., Okine, L., Szlyk, H. S., Peoples, J. E., Kasson, E., Cavazos-Rehg, P., Firth, J., & Torous, J. (2022). Excessive screen time behaviors and cognitive difficulties among adolescents in the United States: Results from the 2017 and 2019 national youth risk behavior survey. Psychiatry Research, 316, 114740. https://doi.org/10.1016/j.psychres.2022.114740
- Ocon, A. J. (2013). Caught in the thickness of brain fog: exploring the cognitive symptoms of Chronic Fatigue Syndrome. Frontiers in Physiology, 4. https://doi.org/10.3389/fphys.2013.00063
- Stefansdottir, R., Gundersen, H., Rognvaldsdottir, V., Lundervold, A. S., Gestsdottir, S., Gudmundsdottir, S. L., Chen, K. Y., Brychta, R. J., & Johannsson, E. (2020). Association between free-living sleep and memory and attention in healthy adolescents. Scientific Reports, 10(1). https://doi.org/10.1038/s41598-020-73774-x
- Lassi, Z., Moin, A., & Bhutta, Z. (2017). Nutrition in middle childhood and adolescence. In The World Bank eBooks (pp. 133–146). https://doi.org/10.1596/978-1-4648-0423-6_ch11
- The American Institute of Stress. (2025, April 24). TEENS & YOUNG ADULTS – The American Institute of Stress. https://www.stress.org/who-gets-stressed/teens-young-adults/#:~:text=32%25,%22less%20than%20average%20stress.%22
- Harvard Health. (2021, February 15). Protect your brain from stress. https://www.health.harvard.edu/mind-and-mood/protect-your-brain-from-stress
- Harsanto, E., Yunike & Kusumawaty, I. (2025). Brain Rot and Focus Disorders Survey Impact of Consumption of TikTok and Instagram Reels Content on Teenagers. International Journal Scientific and Professional, 4(3), 593-600. https://doi.org/10.56988/chiprof.v4i3.103
- Bozhilova, N. S., Michelini, G., Kuntsi, J., & Asherson, P. (2018). Mind wandering perspective on attention-deficit/hyperactivity disorder. Neuroscience & Biobehavioral Reviews, 92, 464–476. https://doi.org/10.1016/j.neubiorev.2018.07.010
- Doughty, B. (n.d.). Cognitive Decline/Brain Fog | MQ Mental Health Research. MQ Mental Health. https://www.mqmentalhealth.org/conditions/cognitive-decline-brain-fog/
- Burns, R. D., Pfledderer, C. D., & Fu, Y. (2019). Adolescent health behaviors and difficulty concentrating, remembering, and making decisions. American Journal of Lifestyle Medicine, 15(6), 664–672. https://doi.org/10.1177/1559827619860067
- University College London Hospitals NHS Foundation Trust. (n.d.). Understanding and Managing Brain Fog: for Young people Living with Fatigue Conditions : University College London Hospitals NHS Foundation Trust. https://www.uclh.nhs.uk/patients-and-visitors/patient-information-pages/understanding-and-managing-brain-fog
