The first clear description of ‘fibrocystic disease of the pancreas’ or Cystic Fibrosis (CF) came in the late 1930s and evidence of vitamin A deficiency was reported in 10 of 49 patients as early as 1939. Indeed, this paper recommended ‘generous dosages’ of vitamin A for these patients. Biochemical evidence of fat-soluble vitamin deficiency occurs early in infants diagnosed with CF by newborn s...