title: The whole is greater than the sum of the parts. II. Beta carotene.
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003920:Diabetes Mellitus / Q000517:prevention & control*; D004032:Diet; D006801:Humans; D008297:Male; D008875:Middle Aged; D019207:beta Carotene / Q000627:therapeutic use*
chemical_list: D019207:beta Carotene