Book excerpt: As fad diets come and go, one aspect of all health and diet remains and even continues to grow in emphasis - the importance of good nutrition. Good health is priority number one, especially for parents bringing up children in a world of junk food. No matter what your diet or whether you work in a cubical or are training as an athlete, nutrition is your number one consideration. In the fourth edition of The Complete Idiot's Guide to Total Nutrition, readers will find- Everything you need to know to ensure that you and your family are getting the best nutrition possible How to get the needed vitamins and minerals you need daily in your food How to shop smart for food What you need to know about fats and cholesterol