Brain Fog: Symptoms, Causes, & How to Cope

What Is Brain Fog?

Brain fog is a lack of focus and clarity. Dealing with a foggy brain can make concentrating on tasks, remembering information, or communicating difficult. Severe brain fog is frustrating and can lead to problems in daily life, relationships, and professional roles.

What Does Brain Fog Feel Like?

Some people describe brain fog as “feeling fuzzy,” while others report disconnect from their surroundings as if watching the world through a haze. The experience of feeling foggy-headed can make attention and concentration seem impossible. Brain fog may also manifest as emotional numbness, apathy, and dissociation. Someone may be physically present but mentally absent.¹

Brain Fog Symptoms

Mind fog creates frustrating symptoms that impair cognitive abilities. Those experiencing symptoms have difficulties concentrating, focusing, or completing tasks. Constant brain fog can lead to problems in the workplace, academics, or relationships. Additionally, brain fog can interfere with the ability to make rational decisions, sometimes leading to chronic forgetfulness and distractibility.

Symptoms of brain fog may include:

• Decreased concentration
• Distractibility
• Trouble focusing
• Confusion
• Fatigue
• Forgetfulness
• Trouble with word recollection
• Memory impairment (both short and long-term)
• Decreased ability to multitask
• Trouble with decision-making
• Difficulty learning new skills
• Slowed response time
• Decreased mental clarity and alertness

What Causes Brain Fog?

Experts propose various brain fog causes, including physical and mental health conditions. People may also feel fuzzy-headed because of poor diet, chronic stress, or hormonal changes related to pregnancy and menopause. While the reasons for brain fog vary, lifestyle changes can help individuals improve mental energy and boost concentration.

Potential causes of brain fog include:

Stress

Stress releases specific hormones into the body, including adrenaline and cortisol, to prepare us for fight-or-flight. This reaction can reduce functioning in parts of the brain that control decision-making and rational thought. Over time, chronic stress can lead to high levels of cortisol in the bloodstream, causing long-term mental and physical problems, including brain fog.

Anxiety

Research suggests anxiety decreases cognitive performance and working memory.^{2, 3, 4} When individuals constantly ruminate on past or future events, mistakes, or possible outcomes, they burn through their mental resources and energy. Eventually, this chronic mental fatigue can affect concentration and clarity, leading to brain fog.

Depression

Depressive disorders impact neurological regions, including the hippocampus, prefrontal cortex, amygdala, anterior cingulate cortex, and basal ganglia. Disruptions to these areas decrease interaction between white matter and gray matter, sometimes contributing to depression-induced brain fog and memory loss. ⁵ Additionally, low levels of serotonin, dopamine, GABA, and glutamate associated with depression can impair healthy cognitive function.

Lack of Sleep

Brain fog also occurs due to a lack of sleep, as less than seven or eight hours of rest can impact thinking, attention, concentration, and reaction times. Research suggests sleep deprivation for 48 hours has the same impact on cognitive ability as a blood alcohol content of .1 (almost twice the legal limit in the U.S.).^{6, 7}

Poor Diet

Diet is another contributing factor to brain fog. Adequate gut health is essential to cognitive wellness as the digestive process provides crucial enzymes and nutrients for neurological health.⁸ For this reason, evidence suggests obesity can cause inflammation in the brain, while poor diet can impair energy consumption and production processes.^{8, 9}

Hormonal Changes

Hormones can affect brain function, leading to symptoms of forgetfulness and difficulty concentrating. Some people label these issues as” pregnancy brain.” During menopause, hormones can fluctuate greatly throughout the day, causing changes in memory and concentration. These hormonal changes to brain function can be significant and frustrating.

Medications

Brain fog is a common side effect of many prescription and over-the-counter medications. Symptoms can range from mild to severe, depending on the dose and individual. A new medication, changes in dosage, or interactions with other drugs could cause sudden brain fog.

COVID-19 & Long COVID

COVID and long COVID can lead to increased brain fog and cognitive impairments. This risk can be caused by inflammation and the immune system’s response to the virus, although research is still needed to determine the exact cause.¹⁰

Attention-Deficit/Hyperactivity Disorder (ADHD)

Some characteristic symptoms of ADHD include forgetfulness, difficulties paying attention, and ongoing fatigue. Many individuals also struggle with sleep disturbances that can exacerbate these symptoms. Because of these difficulties, brain fog and ADHD often co-occur and can impact functioning in various aspects of life.

Medical Conditions

Certain medical conditions can cause changes in brain function. Stress impacts every aspect of life, but some individuals struggle with their stressors and triggers. An overactive stress response can contribute to residual autoimmune conditions, allergies, and cancer.

Conditions that may cause brain fog include:^{1, 8}

• Dementia
• Alzheimer’s disease
• Multiple sclerosis (MS)
• Certain cancers and cancer treatments
• Sleep apnea
• Thyroid conditions
• Arthritis
• Migraines
• Chronic fatigue syndrome (CFS)
• Lupus
• Allergies
• Fibromyalgia
• Celiac disease

How Long Does Brain Fog Last?

Many people wonder, “Does brain fog go away?” For some, brain fog ebbs and flows when stressed. Typically, brain fog lessens or subsides with time, self-care, and relaxation. However, persistent symptoms related to mental or physical health conditions may require professional intervention. You may need a more thorough evaluation or neurological testing to rule out other potential causes.

How to Prevent Brain Fog

Preventing brain fog may be possible with a healthy lifestyle or medication changes. While long-term conditions may still result in periodic brain fog, taking positive steps toward improved health, diet, and stress can significantly reduce the impacts on functioning.

Below are 12 tips for dealing with brain fog:

1. Exercise Regularly

Exercise has numerous benefits, including improved sleep, decreased stress, and enhanced clarity and focus. Increasing your heart rate also boosts oxygen flow to the brain, further improving neural functioning. Each of these benefits may indirectly decrease the risk of having brain fog.

2. Get Plenty of Sleep

Waking up with brain fog is never pleasant. Fortunately, you can combat symptoms by improving your sleep hygiene and schedule. For example, try to go to bed and wake up around the same time each day. Implement a consistent, wind-down routine to help you fall and stay asleep. These little changes can promote sleep quality, ultimately improving brain fog.

3. Manage Your Stress Levels

Persistent brain fog may stem from stress, so stress management can help rid you of symptoms. While avoiding all stress is impossible, you can refer to healthy coping skills when overwhelmed. Choose and prioritize activities that help you feel recharged or reconnected to yourself, such as progressive muscle relaxation, meditation, or yoga.

4. Avoid Multitasking

Skipping multitasking so you can focus on one task at a time. Multi-tasking can contribute to decreased attention and concentration, often worsening brain fog. Focus on completing your task and stay positive.

5. Take Mental Breaks

Extended periods without rest can result in fatigue and mental exhaustion. Plan breaks regularly throughout your day, even for a few minutes. Alternatively, take time off when you feel overwhelmed or need to recharge (if possible). Allowing your mind and body time to recover from the overload of daily life can help reduce or prevent brain fog.

6. Try to Stick to a Healthy Diet

Extreme brain fog can interfere with every aspect of life, especially if you have nutrition deficiencies. For instance, you may feel sluggish throughout the day if your diet lacks sufficient vitamins, protein, and complex carbohydrates. Alternatively, you can also feel tired after emotional eating or binging. Regular and well-rounded meals can help increase energy, cognition, and concentration when coping with brain fog.

7. Limit Caffeine & Alcohol Intake

Excessive caffeine use can lead to withdrawal symptoms, including tiredness, lack of energy, and brain fog. Additionally, alcohol is a depressant that can lead to mood changes, memory, sleep, concentration, and brain fog.

8. Try New Things

Sometimes, exploring fun and pleasurable hobbies can mitigate persistent brain fog, as learning helps strengthen cognition and focus. Regular novelty also optimizes brain health, so consider incorporating new activities throughout your day, such as reading a book, visiting a museum, or attending an educational class.

9. Stay Socially Active

Staying socially active can provide essential emotional support, prevent isolation, and be cognitively stimulating. Spending time with people who make you laugh and challenge you can boost your mood and promote new connections in the brain, reducing the effects of brain fog.

10. Prioritize Self-Care

Engaging in mindfulness, meditation, and hobbies can reduce stress and anxiety that contribute to brain fog. Self-care can also improve physical health and enhance energy levels, all of which can improve cognitive functioning.

11. Take Supplements

Some supplements can support brain health and decrease brain fog. These include Omega-3 fatty acids from fish oil and C, E, and B vitamins. Some studies support claims that supplements help brain function. However, more evidence is necessary to determine efficacy and safety. Talk with your healthcare professional about whether supplements can help with your brain fog.

12. Delegate Tasks

Delegating tasks can help by reducing the mental and cognitive load and stress. Spreading your workload reduces overwhelm, boosts concentration, and improves efficiency. Delegating means more time for rest and recovery and builds teamwork and support.

When to Seek Brain Fog Treatment

Finding a “brain fog cure” is unlikely, but seeking professional support can help you cope with symptoms. Occasional brain fog does not inherently require professional intervention. However, chronic and unmanageable symptoms warrant a discussion with your doctor, as untreated brain fog may lead to memory loss.

Determining how to treat brain fog depends on various factors, including the severity of symptoms and your goals for treatment. A medical practitioner may prescribe or change medications if your mental fatigue stems from a physical health condition. Other times, therapy can help individuals learn healthy ways to manage stress and recover from overwhelm. You can start by finding the right therapist in an online therapist directory.

Below are signs to consider seeking professional help for brain fog:

• Persistent symptoms that don’t get better or even worsen over time
• Inability to function at work
• Loss of interest in everyday activities
• Accompanying physical symptoms
• Mental health symptoms like depression or anxiety
• Medication side effects
• Sudden worsening of symptoms