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.
Foods rich in salicylates include ginger, turmeric, garlic and onion. Foods rich in Omega-3 Fatty Acid inhibit clotting and decrease the production of the pro-inflammatory compound leukotrienes. Some Omega-3 rich foods include mackerel, salmon, walnuts, flaxseed, beans and olive oil. Pumpkin seeds, soya based foods, sunflower seeds and sesame seeds contain phytoestrogens that improve blood circulation by increasing dilation and thereby expanding small arteries.