A groundbreaking book about the history of telomeres that offers fresh advice on how to slow down aging and extend life. Nobel laureate Dr. Elizabeth Blackburn and leading health psychologist Dr. Elissa Epel have discovered biological markers called telomeres that can help us understand how healthy our cells are and what we can do to improve them. The book specifically explores ideas such as how biological age is not the same as chronological age, a biological basis for the connection between mind and body, how sleep and nutrition can affect telomeres, and how mothers who are highly stressed during pregnancy have children with shorter telomeres. It also provides tools and advice on how to assess cellular age and the health of telomeres. Dr. Elizabeth Blackburn was awarded the Nobel Prize in Physiology or Medicine in 2009 for her discovery of telomeres and their role in the aging process.