Actress Cameron Diaz opens a conversation with her peers on a topic that for too long has been taboo in our society: the aging female body. She shares the latest scientific research on how and why we age, synthesizing insights from top medical experts with her own thoughts, opinions, and experiences. The Longevity Book explores what history, biology, neuroscience, and the women's health movement can teach us about maintaining optimal health as we transition from our thirties to midlife. From understanding how growing older impacts various bodily systems to the biological differences in the way aging effects men and women; the latest science on telomeres and slowing the rate of cognitive decline to how meditation heals us and why love, friendship, and laughter matter for health, Diaz offers an all-encompassing, holistic look at how the female body ages -- and what we can all do to age better.