Doctors once dismissed complaints of “chemobrain,” a common side effect of cancer therapy in which patients experience memory problems or mental fuzziness.

Research now shows that chemotherapy can cause real changes in the brain, ranging from forgetfulness to seizures, vision loss and even dementia. **More than 80% of cancer patients develop memory and concentration problems**, according to a study in June from the University of Rochester Medical Center in New York.

[Read](http://www.usatoday.com/news/health/2006-11-29-chemotherapy-brain_x.htm?csp=34 “Read the Story”) (USA Today)