This series provides users with accessible information for evaluating the often conflicting and ever-changing issues surrounding nutrition and healthy living.; This title in Lucent's Nutrition and Health series examines the history of vaccines, current usage, and controversies surrounding vaccinations.; Individual volumes focus on a specific health or nutrition-related topic, such as body image, diets and dieting, junk food, or vegetarianism. Each contains a topic overview, information about changing trends, up-to-date scientific analysis, and a look at