'Chemo brain' caused by malfunction in three types of brain cells, study finds

More than half of cancer survivors suffer from cognitive impairment from chemotherapy that lingers for months or years after the cancer is gone. In a new study explaining the cellular mechanisms behind this condition, scientists at the Stanford University School of Medicine have demonstrated that a widely used chemotherapy drug, methotrexate, causes a complex set of problems in three major cell types within the brain's white matter.

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