The Perimenopause Survival GuideA hopeful and simple 3 step guide to ensure you feel your very best through the biggest transition of your life, written by Harvard doctor Heather Hirsch A hopeful and simple 3 step guide from a Harvard doctor to ensure you feel your very best through the biggest transition of your life. 'A compassionate, science backed roadmap for women over 35 . to understand their bodies, take charge of their health, and finally feel like themselves again' Tamsen