"Food Rules" is a book by Michael Pollan that offers simple guidelines for eating healthily. The main idea is to focus on whole, natural foods while avoiding processed items. Pollan emphasizes the importance of eating food that is recognizable and comes from nature, rather than products with long ingredient lists. The book presents practical advice, such as eating mostly plants, cooking at home, and being mindful of portion sizes. By following these rules, individuals can improve their diets and overall well-being. Pollan's approach encourages a balanced relationship with food, promoting both health and enjoyment.