The New Perimenopause by Mary Claire Haver MD

You’re Not Crazy. You’re in the Zone of Chaos.

In The New Perimenopause, #1 New York Times bestselling author and leading women’s health expert Dr. Mary Claire Haver delivers the definitive, evidence-based guide to the often-misdiagnosed and medically ignored years before menopause.

If you’re in your mid-30s to early 50s and suddenly don’t feel like yourself—irregular periods, crushing fatigue, mood swings, brain fog, sleep problems, or changes in libido—you’re not alone. This is perimenopause: the hormonal “Zone of Chaos” where estrogen and progesterone fluctuate wildly, triggering symptoms doctors too often dismiss or shrug off.

Building on the success of her groundbreaking bestseller The New Menopause, Dr. Haver arms you with clear science-backed explanations, practical checklists, doctor conversation scripts, and the very latest research on hormone therapy (including progesterone). She shows why addressing these changes now is powerful preventative medicine for your later years.

This comprehensive roadmap covers:

• What’s really happening in your brain, metabolism, bones, muscles, and mood
• How to advocate for yourself and get the care you deserve
• Proven strategies to reclaim energy, sleep, sex, and confidence

Whether your symptoms are mild or overwhelming, The New Perimenopause removes the mystery, ends the gaslighting, and puts you back in control of your health.