For many oncology patients undergoing chemotherapy or brain radiation, subtle changes in mood, forgetfulness and concentration may be noticed at the end of treatment. It is when patients are returning to their “normal” lives that they realize they may have a condition called cognitive dysfunction—commonly known as chemo brain. These symptoms were often attributed to stress, fear or other underlying medical conditions such as anemia. Underlying medical conditions do in fact contribute to chemo brain but they are not responsible for it. Recent extensive studies, however, have shown that these patients are prone to having short term memory loss, mood changes, difficulty concentrating, unable to multitask, and difficulty with language and math.
Unfortunately, there is not a single explanation as to what causes chemo brain. Direct neurotoxic effects of chemo agents (or the metabolites), and hormonal changes induced by the treatment may all play a role. Dose and dose timing, age, genetic factors, and the specific chemo agents may also influence the extent, duration, and the type of side effects each person will experience.
Keeping active, mentally and physically can help preserve memory and other mental functions. Mental activity increases the connections between brain cells and keeps the connections alive. If brain cells aren’t used regularly their connections will weaken. Some examples of brain-strengthening mental activities include reading, doing puzzles, playing a musical instrument, painting, cooking, writing journals, trying to write with your non-dominant hand, using two senses at the same time—like getting dressed with your eyes closed or smelling a flower while listening to music. Regular physical activity can also protect the brain. Brain-protecting physical activities include walking, going up and down stairs, hiking, cycling, driving and gardening. It may also be helpful to use a calendar or another organizational aid to keep track of appointments and other commitments. Stress places an enormous burden and compounds the symptoms. Don’t allow setbacks to “rain on your parade”, reduce complexity in your life and indulge yourself every once in a while with agreeable things that give you pleasure.
There is hope; most people recover fully from the effects of chemotherapy. It is important to remember that there is a recovery process that goes on with time; a lot happens over 6 months, more over 1 year, and some after 2 years.
Geronima Cortese-Jimenez, MPH, RN