Brain Fog After COVID-19: Its Effect on Work Performance

Brain Fog After COVID-19; Its Effect on Work Performance

By Marilyn Abrahamson, MA,CCC-SLP


For some, brain fog after COVID-19 can cause everyday cognitive tasks to be more difficult, causing the thought of returning to work to become daunting. 

Among the many symptoms of Long COVID, one study suggests that up to 80% of COVID-19 survivors suffer from neuropsychological symptoms such as memory impairment, attention deficit, executive dysfunction, difficulty with word finding, multitasking, and impaired visual/spatial skills. These are skills employees need to properly perform their jobs. When these skills become impaired, people can become overwhelmed by the smallest tasks.

Another study showed that quality of life at work was reduced for over 75% of study participants continuing to experience brain fog symptoms. In this study, memory problems and difficulty with multitasking had the most significant impact on the quality of life at work after COVID-19.

With this in mind, many employers are now being asked to help by making accommodations that include extending deadlines, allowing more flexible work schedules, and reducing workloads.

How and Why COVID-19 Causes Brain Fog Symptoms

Researchers have discovered multiple causes of persistent neurocognitive symptoms after having Covid-19. Three of the most common are as follows:

● Neuroinflammation: Increased levels of inflammatory cytokines (molecules produced by the immune system that help the body fight infection) have been found within the brain for weeks after a bout with COVID-19. When the immune system becomes uncontrolled, it can cause increased inflammation in the brain, resulting in poor communication between the brain cells and nerve pathways, causing the brain to feel foggy and slow.

● Reduced Oxygen and Blood Flow to the Brain: COVID-19 is primarily a respiratory virus and can cause hypoxia (reduced levels of oxygen) in some patients. This reduction of oxygen and blood flow to the brain can result in a metabolic disturbance, disrupting the connection between brain cells and the blood vessels that supply them with nourishment. Imaging studies showed the same metabolic changes in both the brains of patients who had suffered from hypoxia as well as those with Long COVID brain fog symptoms. Notably, this is also a similar mechanism for lingering cognitive symptoms after traumatic brain injury.

● Distraction Caused By The Presence of Other Lingering Symptoms: This is not exclusive to COVID-19, but the symptoms of brain fog can be partially attributed to associated symptoms such as acute or long-standing bouts with headaches, fatigue, and body aches. The presence of any type of physical discomfort or emotional upset can make cognitive tasks more difficult due to distraction, causing a lack of attention, focus, and concentration.


How To Cope with Symptoms

If brain fog symptoms are significantly affecting work performance, deep cognitive testing can be performed by a neuropsychologist (SLP). Evaluation and treatment for cognitive symptoms can also be offered by a speech-language pathologist. Treatment by an SLP will likely include brain-training exercises as well as instruction in compensatory strategies for memory and attention. There are also brain-healthy habits people can engage in on their own.

● Exercise is key. Both aerobic exercise and strength training are important for brain health.

● Puzzles or brain training apps like Brain HQ can be helpful.

● Try to get 7-8 hours of good quality sleep each night.

● Eat a brain-healthy diet high in monounsaturated fats, plant protein, whole grains, and seafood.

● Stay connected with others and socialize often.

● Try mindfulness and meditation to help reduce stress and improve focused attention.

● Learning and using both internal and external memory strategies. There are strategies for name recall, remembering lists and reminders, organizational systems, and calendar management. These are compensatory strategies that help people work around the part of their brains that are not working as well as they did before.

● Pacing oneself. If fatigue sets in, it can cause more fogginess. Taking a break is the best way to reset and recharge.

● Aside from seeing their personal physician, consulting a mental health professional is crucial if a person is experiencing mood changes or depression.

If you'd like to learn more, or schedule a free consultation with a brain health coach, visit our website at www.longliveyourbrain.com.


MARILYN ABRAHAMSON, MA, CCC-SLP is a brain health education specialist and coach, and co-creator of the ©Long Live Your Brain program, an online group brain health coaching program for people striving for more reliable memory, attention, and clearer thinking. She is the creator of BrainTrain, online and in-person brain training group classes. In addition, she is the co-author of an e-workbook entitled Life Happens... Chemo Fog: Regain Clarity and Build Cognitive Reserve. More information can be found at www.longliveyourbrain.com. Marilyn has been a Speech-Language Pathologist since 1987.

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