The vast majority of the evidence supports the latest US Dietary Guidelines, which state that a “healthy” 1,800-to-2,000-calorie diet could include six slices of bread a day—including up to three slices of “refined-grain” white bread.
Costco offers almost every bread from 675g (23.8oz) loaves to large slice 1.2kg (43oz) loaves. Containing 20 slices for the 675g (23.8oz), 34 slices for the 1.2kg (43oz) loaf, and 17 slices for the 570g (20oz) loaf.