Anti-aging expert Giampapa (Quantum Longevity), DNA researcher Pero and nutritionist Zimmerman present a five-step program that claims to reverse the aging process. Before readers can say they've seen this before, the authors insist their book is different because it "attacks aging at its genetic roots with a comprehensive plan." Giampapa, Pero and Zimmerman first present a set of simple self-examinations for readers to "factor their personal aging equation" by measuring "aging indicators" like chronic pain, poor memory and reduced mobility. After a detailed explanation of how poor nutrition and free-radical damage promote aging, the authors present their program, which intends to change "the way our genes express themselves." The five stages consist of reducing stress, enhancing nutrition, exercising regularly, using dietary supplements and caring for the skin. For each step, the authors offer an abundance of helpful pointers; their advice on nutrition and its effects is particularly useful. Among the book's perks are easy to follow, color-coded charts detailing a healthy diet (which can be modified for vegetarians), recommended exercise routines that are beneficial but not overly demanding, skin care regimens and a list of suppliers of nutraceuticals (natural, bioactive chemical compounds that have health-promoting, disease-preventing or medicinal properties). (Mar.) Forecast: With a $75,000 marketing budget, publicity in New York and New Jersey, and national print and radio campaigns, this book has a shot at selling out its 50,000-copy first printing. (c) Copyright PWxyz, LLC. All rights reserved