A hidden condition affects 1 in 3 Indians and is responsible for six of the nation's top ten causes of death. Shockingly, 99 percent of Indians have never been tested for it. This condition, insulin resistance, silently harms families nationwide. Doctors treat diabetes, heart disease, PCOS, obesity, fatty liver, stroke, and Alzheimer's as separate diseases, but miss what connects them all. Conventional medicine measures the wrong markers. By the time fasting glucose shows prediabetes, insulin resistance may have been damaging the body for years. Medicine waits for disease. Prevention is crucial. Indians are genetically predisposed to these conditions. Genes that once aided survival now increase vulnerability to insulin resistance. Rapid dietary shifts, chronic stress, and sedentary lifestyles are fueling a growing epidemic. Insulin resistance is reversible, if detected early. Sick Nation presents a proactive, preventative protocol for metabolic health, designed to detect insulin resistance years before diagnosis and reverse it before chronic disease begins. Developed through extensive research, food testing, and expert consultation, this evidence-based book aims to prevent and address the condition affecting millions across India. Inside, readers will The metabolic link behind six deadly diseases, plus early warning signs and tests How famine shaped Indian metabolism and why modern lifestyles increase risk Hidden sugars in everyday meals, why modern wheat is riskier, and how food changes impact health A three-pillar prevention protocol covering nutrition, movement, and stress management A four-week roadmap to change habits, with no restrictive diets or extreme overhaulsEndorsed by leading medical experts, Sick Nation is your blueprint to reclaim health before it is too late. EDITORIAL REVIEWS "Karan has rightly emphasized the role of insulin resistance as the root cause of the twin epidemic of diabetes and obesity. He has nicely laid out simple things that can be done by anyone to prevent, reverse, or control it." Dr. V. Mohan, Padma Shri recipient and Chairman, Dr. Mohan's Diabetes Specialities Centre "A work of profound importance for India's future. An essential guide for every young Indian who wants to break the intergenerational cycle of chronic disease." Dr. Chittaranjan Yajnik, Pioneer of the thin-fat Indian phenotype and Director, Diabetes Unit, KEM Hospital and Research Centre, Pune "Most of what makes people sick comes from the food we eat and the misinformation we have been taught to believe. This book is more than a warning. It is a wake-up call and a path forward." Dr. Eric Berg, DC, Author and Health Educator "Explains why Indians are disproportionately affected, genetic predisposition toward insulin resistance compounded by a diet chronically low in protein and high in refined carbs. Karan used his CGM to expose how this made India the diabetes capital of the world." Kris Gethin, Co-Founder, Kris Gethin Gyms India "Karan Sarin connects the dots between lifestyle, metabolism, and cellular damage with rare clarity. Prevention is not guesswork. It is understanding and working with the body's design." Dr.