Before discussing breast cancer, it's important to be familiar with the anatomy of the breast. The normal breast consists of milk-producing glands that are connected to the surface of the skin at the nipple by narrow ducts. The glands and ducts are supported by connective tissue made up of fat and fibrous material. Blood vessels, nerves, and lymphatic channels to the lymph nodes make up most of the rest of the breast tissue. This breast anatomy sits under the skin and on top of the chest muscles...
Fatigue is a daily lack of energy or whole-body tiredness that doesn’t go away, even with good sleep. It can keep you from doing normal, daily things, and it affects your quality of life. Sometimes it's "acute," meaning it lasts a month or less. In other cases it's "chronic" and lasts up to 6 months or longer. Usually, it comes on suddenly, and may continue after you're done with your treatment.
Here are some possible reasons for it, along with tips to help you get some of your energy back.
Causes of Cancer-Related Fatigue
The disease itself can be the problem. Tumor cells steal calories and nutrients from normal cells, and that leads to tiredness that won't seem to let up.