Prateek Yadav, the 38-year-old son of Mulayam Singh Yadav, passed away due to pulmonary thromboembolism, a severe condition characterized by blood clots obstructing the pulmonary arteries. Reports indicate that the immediate cause of death was a massive blockage leading to cardiorespiratory collapse. Experts, including Dr. Manas Mengar and Dr. Pravin K Goel, explain that pulmonary thromboembolism typically arises from deep vein thrombosis (DVT) in the legs, which can occur due to various factors such as prolonged immobility, obesity, and certain medical conditions. Symptoms are often subtle and can be confused with other health issues, making early diagnosis challenging. Both doctors emphasize the importance of recognizing risk factors and symptoms, as timely medical intervention can significantly improve outcomes and prevent severe complications, including heart failure and cardiac arrest. Individuals at higher risk include older adults, cancer patients, and those recovering from surgery.