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Chemotherapy May Cause Memory and Concentration Difficulties, Shows Study

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According to new research, Chemotherapy can induce changes in patient brains, affecting their concentration and memory. Dubbed “chemo brain,” the physiological effects were detected by researchers using PET/CT scans.

“The chemo brain phenomenon is described as ‘mental fog’ and ‘loss of coping skills’ by patients who receive chemotherapy,” said Dr. Rachel Lagos, a diagnostic radiology resident at the West Virginia University School of Medicine. “Because this is such a common patient complaint, healthcare providers have generically referred to its occurrence as ‘chemo brain’ for more than two decades.”

“Chemo brain” may be common, but it’s cause has eluded doctors for as long as it’s been around. Previous studies using MRIs found small changes in brain volume following chemotherapy, but no definite link was established. Lagos and his colleagues looked at changes to the brain’s metabolism instead of volume.

“When we looked at the results, we were surprised at how obvious the changes were,” said Lagos. “Chemo brain phenomenon is more than a feeling. It is not depression. It is a change in brain function observable on PET/CT brain imaging.”

The researchers looked at PET/CT brain images from 128 patients who had chemotherapy treatment for breast cancer. The results, obtained using software that reveals differences in brain metabolism, found statistically significant differences decreases in regional brain metabolism closely related to symptoms of “chemo brain.”

“The study shows that there are specific areas of the brain that use less energy following chemotherapy,” said Lagos. “These brain areas are the ones known to be responsible for planning and prioritizing.”

Chemotherapy May Cause Memory and Concentration Difficulties, Shows Study
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  • Mary Lou Kirkendoll

    You are so right about chemotheraphy and memory loss. I had a year of chemo for Multiple Myeloma. I now have problems with planning ahead and also priortizing from week to week. I used to be able to anticipate event’s and plan for them. Now if I don’t write appointments, birthdays & everyday things, they just fly right over my head. I had never had a problem before having chemo. It’s been two years now since I’ve had any treatment’s, other than Zometa, which is a bone strengthening medicine. I thought at first it was just me getting older, but it seems to have started after chemo. I’m now 75 years old……. I’m glad to see they are doing research on this problem.

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