title: The fast-food restaurant as a laboratory.
mesh_terms: D001835:Body Weight; D004032:Diet / Q000592:standards*; D005260:Female; D005638:Fruit; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008019:Life Style; D008297:Male; D012107:Research Design; D012147:Restaurants; D014556:Urine