Katherine Navas, a high school student, on the roof of her family’s home in a barrio in Caracas, Venezuela with her typical day’s worth of food. (From the book What I Eat: Around the World in 80 Diets.) The caloric value of her typical day’s worth of food in the month of November was 4,000 kcals. She is 18 years of age; 5 feet, 7 inches tall; and 157 pounds. Unlike housing in most of the developed world, the higher the house, the cheaper the rent in the dangerous Caracas barrios. Those living at the top of the steep hillside have to travel the farthest to reach services, shops, and the main street, a trip normally made only in the daylight hours. MODEL RELEASED