Fatigue is only one symptom of various illnesses and may be caused by an imbalance of energy availability and use. Both result in suffocation of your cell's fire. In diabetes you have all the fuel you want, just can't get it into the cells, because the insulin is missing. Chronic illnesses such as chronic inflammation or malignancies use-up too much of your energy. There may be things you can do.
Exercise is the best energizer.
Presented as a public service from Straub's Doctors on Call Waikiki clinics.