Video: Cancer-Related Fatigue: Causes   Educating patients and
caregivers about cancer-related fatigue can help them prepare
for this common symptom, says William Breitbart of Memorial
Sloan-Kettering Cancer Center. Common causes of fatigue include
the effects of cancer on the body; treatments such as radiation
therapy, chemotherapy, and surgery; other medical conditions; or
emotional problems such as anxiety or depression.