Explore the shifting boundaries between sickness and health in The Age of Diagnosis by Dr. Suzanne O’Sullivan. This essential read delves into the increasing prevalence of medical labeling—from autism to long Covid—and critically examines whether these diagnoses ultimately benefit patients or risk turning healthy individuals into patients. Drawing on decades of clinical practice and the latest medical research, O’Sullivan challenges long-held assumptions about illness.

Key Insights & Focus Areas:

• Examines the impact of expanding mental health categories and what is considered 'normal.'
• Investigates the implications of genetic testing detecting pathologies decades before symptoms appear.
• Analyzes how increased health screening draws more people into believing they are unwell.
• Balances the benefits of accurate diagnosis (understanding and improved treatment) against potential harm.
• Features stories of real people alongside extensive clinical and research evidence.

Authoritative Recognition:

This book has been recognized as a bestseller and Book of the Year by major publications including The Guardian, Sunday Times, Financial Times, The Economist, and New Scientist. It was also featured on Radio 4 Book of the Week.

Specifications:

• Author: Suzanne O’Sullivan
• Binding: Paperback
• Language: English
• Print Length: 320 pages
• Publisher: Hodder Press
• Publication Date: March 19, 2026
• ISBN-13: 978-1399727662
• Dimensions: 126 x 196 x 24mm
• Weight: 226g

For professionals and readers interested in Neurology, Medical Sciences, and the philosophy of health, this book offers a compassionate yet bracingly independent analysis of modern diagnostic practices.