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"...Patients with chronic lymphocytic leukemia (CLL) who feel more stress also have more cancer cells in their blood and elevated levels of three other markers of more advanced disease. A new study of 96 patients is the first to link stress with biological disease markers in patients with CLL. “All four variables we measured are related to prognosis in CLL patients, so they have a lot of relevance,” said Barbara L. Andersen, lead author of the study and professor of psychology at The Ohio State University. “It’s more evidence of the importance of managing stress in cancer patients.”