Vitamin D deficiency is the most common medical condition in the world. Recent research indicates that 23 per cent of Australians have some degree of vitamin D deficiency, including up to 43 per cent of young women. As a result, they may suffer from chronic health conditions, ranging from daily annoyances such as fatigue and pain to life-threatening illnesses. But few people know why vitamin D is so important and what they can do to avoid the myriad ailments associated with deficiency, including osteoporosis, diabetes, heart disease and cancer. There is no better person to demystify this vitamin and showcase its place in human health than author Michael F. Holick, MD, PhD - the father of modern vitamin D research. With more than three decades spent studying the relationship between vitamin D, limited sun exposure, and human well-being, Dr Holick shares his findings on how combining the natural curative properties of the sun along with small lifestyle changes can help everyone to live a substantially healthier life. Armed with a three-step plan incorporating safe amounts of sun exposure, the right supplementation, and eating foods rich in vitamin D, Dr Holick provides prescriptive advice for anyone - from relatively healthy people to those suffering from chronic or even fatal diseases - on how to easily rebuild and maintain optimal levels of this essential hormone. Rich with anecdotes and entertaining case studies, The Vitamin D Solution also presents research from around the world to serve as a wake-up call on the importance of this potentially lifesaving hormone. 'Dr Michael Holick has been a hero of mine for many years. How thrilling to have his ground-breaking research on vitamin D in one easily accessible book. This information can save your life. Really.' Christine Northrup, MD, author of the New York Times bestsellers Women's Bodies, Women's Wisdom and The Wisdom of Menopause 'Dr Holick shows us why if you do one thing for your health beside eating well and exercising it MUST be getting more vitamin D through sun or supplements . . . The Vitamin D Solution , written by the world's leading authority on vitamin D, will surprise and delight you.' Mark Hyman, MD, four-time New York Times best-selling author, including The UltraMind Solution