Book excerpt: Case studies with accompanying questions for analysis in the clinical care chapters focus your attention on related patient care problems. Cultural Considerations boxes discuss how a patient's culture can affect nutritional concepts in practice. Clinical Applications and For Further Focus boxes highlight timely topics and analyze concepts and trends in depth. Bulleted chapter summaries review highlights from the chapter and help you see how the chapter contributes to the book's "big picture." Diet therapy guidelines include recommendations, restrictions, and sample diets for major clinical conditions. Drug-Nutrient Interactions boxes highlight important safety information and cover topics such as nutritional supplements for athletics, drugs interfering with vitamin absorption, and over-the-counter weight loss aids. Key terms and definitions clarify terminology and concepts critical to your understanding and application of the material.