Heat stress is increasingly recognized as a silent but severe health threat, particularly for individuals with pre-existing conditions. A recent case in Delhi involved a 62-year-old man who collapsed after a morning walk, suffering from heat exhaustion and dehydration. He experienced elevated body temperature, low blood pressure, and a spike in blood sugar levels, ultimately requiring hospitalization. Dr. Rommel Tickoo, Director of Internal Medicine at Max Healthcare, emphasized that even short exposure to heat can overwhelm the body's cooling mechanisms, leading to serious health complications. The World Health Organization has identified heat stress as a leading cause of weather-related deaths, with a recent study indicating that 57% of Indian districts are now at risk. This situation is exacerbated by rising humidity levels, which hinder the body's ability to cool itself. Experts like Dr. Dileep Mavalankar advocate for better tracking of heat-related illnesses and the implementation of structured governance to manage heat responses effectively. Successful initiatives, such as Ahmedabad's Heat Action Plan, have shown a 40% reduction in mortality rates and serve as a model for other cities. However, the lack of legal mandates and dedicated budgets limits the effectiveness of these plans. A comprehensive, data-driven approach is essential to mitigate the health impacts of extreme heat.