This animated video from Doc Mike Evans explains the effects of cancer-related fatigue.

MORE: Learn about six common chemotherapy side effects

Dr. Evans explains that fatigue is the top most common medical issue for cancer patients, ranking higher than pain or depression. He shares that cancer fatigue is very different to the fatigue most people face when they’re overtired or stressed and that it has a profound effect on a person’s physical and mental health.

Cancer-related fatigue can be brought on by a combination of things: the cancer itself, the side effects of cancer treatments like chemotherapy and radiotherapy, and depression or anxiety associated with having a chronic illness. This type of fatigue is long-lasting and does not diminish after a good night’s sleep or a restful half-hour break.

Dr. Evans suggests some ways to try and counteract their fatigue including exercise, eating well, not overdoing things and avoiding stress where possible.

MORE: Six ways to help reduce stress and relax more

Breast Cancer News is strictly a news and information website about the disease. It does not provide medical advice, diagnosis or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or another qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.