The best-selling eBook with an in-depth analysis of vitamin d deficiency. The vitamin d deficiency is a major public health problem and the most common deficiency worldwide. This book provides the latest findings and research on vitamin D deficiency and the implications it has for human health and longevity. This book is written for clinicians, scientists, and the public. Ensuring good nutrition to prevent and reverse cellular aging is critical to healthy lives and a better future. Deficient vitamin d levels can lead to a wide range of diseases including multiple sclerosis, cancer, diabetes, heart disease and even dementia. This book will provide you with the knowledge and tools you need to help your patients prevent and reverse these diseases. This book is now available in eBook format.