This book is a hard read. Its very technical in detail yet it is reasonably understandable to anyone with average intelligence. Dr. Kervran tells how the life processes is maintained by the living organism's ability to create minerals that it needs from other elemental forms by altering their atomic structures. He mentions osteoporosis, among many other conditions, that develops because the body cannot assimilate calcium directly from foods and supplements which explains why persons with the disease are not helped by taking calcium supplements. He explains that manganese and organic silica will transmutate into an absorbable form of calcium that can reverse the disease. Many other life processes are explained as well. A very fine scientific work that is truly prize worthy.