A large part of a person's day often involves deciding what and where to eat, so it is important to understand what food can do to the body. As readers learn the benefits of nutrients they get from certain foods, they are able to better understand the ways in which a balanced meal can provide protection from disease. They also learn the connection between an unhealthy diet and dangerous diseases. The engaging narrative, supplemented with detailed charts, fact boxes, annotated quotes, and in-depth sidebars, encourages readers to live a healthy life.