Yan De-xin is one of the leading “old Chinese doctors” in the People’s Republic of China today. His theories on blood stasis and aging have revolutionized 2,000 years of Chinese geriatric medicine. Besides being a clinical manual on the treatment of all the most commonly seen geriatric diseases, this book contains the best discussion of the inter-relationship of the qi and blood of any so far in the English language. This book is an important addition to the English language Chinese medical literature.