Biochemical studies in full-blooded Navajo Indians.

The Navajo Indians, who have a low incidence of coronary artery disease and a high fat intake, have also been shown to have significant elevation of serum gamma globulins. In this electrophoretic study of patterns of serum proteins it was found that adult Indians had elevated gamma globulins but that Indian children had electrophoretic patterns similar to white children. These observations indicate that the gamma globulin elevation is not an inherited characteristic in this Indian race and is probably not related to the low frequency of coronary disease.