causes of feeling cold and tired
Not sure how good the science is. 1. Hypothyroidism- that is, a low circulating level of thyroid hormone. This is a not uncommon condition that can cause a whole range of symptoms, chief among them being tired feeling and cold intolerance. 2. Anemia- low blood level (hematocrit/hemoglobin) and so a low level of circulating oxygen. Anemia has many causes and can come on gradually and surreptitiously.
Anorexia is a condition in which an individual refuses to eat for fear that they will gain weight. More common in women than men, anorexia can cause an individual to feel tired, cold, develop a yellow cast to their skin and grow a fine layer of hair across their body.