Antioxidants prevent free radicals from damaging critical DNA in every cell of the human body. “By controlling free radicals, antioxidants can make the difference between life and death, as well as influence how fast and how well we age. Their role in the human body is nothing less than miraculous,” says Lester Packer, Ph.D., in The Antioxidant Miracle. Dr. Packer is regarded as the world’s foremost antioxidant research scientist. He is Director of Packer Lab at the University of California at Berkeley, and a senior scientist at the prestigious Lawrence Berkeley National Laboratory.