Milk consumption is related to arteriosclerosis. Recent landmark studies confirm a previously suspected close correlation between milk intake and arteriosclerotic heart disease. Support is therefore provided for a recently proposed novel hypothesis that arteriosclerosis is a chronic infectious disease caused by blue-green bacteria and that milk is a carrier vehicle for these contaminant organisms. A revisionist view of diet and milk in the causation of arteriosclerosis is developed. Previous hypotheses relating milk consumption to arteriosclerosis and advances in pasteurization techniques are discussed and integrated with this infection theory.