In this golden age of medical discovery, cutting-edge treatments are emerging that increase longevity, stave off disease, and enhance our appearance and quality of life—our "healthspan." But chances are, these advances are not readily available at most doctor's offices, in stores, or easy to find online.Dr. Rand McClain takes a fresh approach to genetics, natural aging, and proactive medical treatments. He is the founder and head of the Regenerative and Sports Medicine Clinic, a le...