sweet blood
n.— «Already, diabetes has swept through families, entire neighborhoods in the Bronx and broad slices of Brooklyn, where it is such a fact of life that people describe it casually, almost comfortably, as “getting the sugar” or having “the sweet blood.”» —“Diabetes and Its Awful Toll Quietly Emerge as a Crisis” by N.R. Kleinfield New York Times Jan. 9, 2006. (source: Double-Tongued Dictionary)