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.
Leafy greens contain antioxidants and they're also loaded with a significant amount of folate. Studies have shown that folate-rich foods improve memory by decreasing inflammation and improving blood flow to the brain, says Wright. Folic acid has also been proven to lower levels of homocysteine, an amino acid linked to a higher risk of heart disease.