Body temperature is determined by the body's thermoregulatory set-point. The body increases this set-point in response to threats such as bacterial or viral infections. When this set-point rises, a fever occurs and the body perceives itself as suffering from hypothermia (colder than it should be).
What You Can Eat. That depends on your blood type. Type O blood: A high-protein diet heavy on lean meat, poultry, fish, and vegetables, and light on grains, beans, and dairy. D'Adamo also recommends various supplements to help with tummy troubles and other issues he says people with type O tend to have.
Hemoglobin, which is an iron-rich protein that is part of the red blood cell. While bone marrow produces more red blood cells over time there are certain foods that can help in increasing the production of red blood cells. Lentil beans, kidney beans, dark leafy vegetables like spinach and kale, all contain iron.