Want to be healthier? "Defend Your Life" explains how you can empower your life by taking a safe and inexpensive daily dose of vitamin D. This book addresses recent medical research -- in easy-to-understand language -- on vitamin D3's wide range of potential health benefits including: decreasing the risk of arthritis, autism, cancer, contagious illnesses, diabetes, heart disease, multiple sclerosis, and thyroid disorders. Adequate vitamin D3 in your body also may improve your athletic abil...