Dr. Harbans Singh Wasir (13 August 1937 – 23 August 2004) was a pioneering Indian cardiologist, teacher, researcher and writer who helped shape modern cardiology in the country. As Professor and Head of the Department of Cardiology at the All India Institute of Medical Sciences (AIIMS), New Delhi, he was especially known for his work on hypertension, rheumatic heart disease and the then-emerging field of preventive cardiology.

Born in undivided Punjab, young Harbans Singh Wasir’s family migrated to Delhi after Partition and lived for a time in a refugee camp near Shahdara. He studied under difficult conditions yet secured admission to the second batch of AIIMS in 1957. He graduated in medicine, topped his class, completed his MD in Medicine in 1965 and DM in Cardiology in 1969—all from the same institute that would become his professional home for three decades.

“Heart disease is not just a medical problem,” he would tell his students during ward rounds. “It is a lifestyle problem. If we wait until the patient reaches the ICU, we have already failed in many ways.”

Wasir rose steadily at AIIMS to become Professor and Head of Cardiology. He excelled equally in patient care, teaching and research, publishing more than 400 papers. His work on the epidemiology of hypertension and rheumatic heart disease gained wide recognition. He also served as Honorary Physician to four Presidents of India and as a Consultant to the World Health Organization on cardiovascular diseases.

Long before “preventive cardiology” became a popular phrase, Wasir championed it. He wrote books for both doctors and the public—Preventive Cardiology, Heart to Heart: A Holistic Approach to Heart Care, Aging and Heart Care, Traditional Wisdom in Heart Care, and versions in Hindi (Haardik Samvad) and Punjabi (Naroa Dil). Through lectures, newspaper articles and radio talks he urged people to adopt healthier habits, manage stress and recognise early warning signs.

After retiring from AIIMS in 1997 he joined Batra Hospital, Delhi, as Medical Director and Chief of Cardiology, continuing to practise and teach until his death on 23 August 2004 after a brief illness.

His contributions earned him the Padma Shri in 1987, the Padma Bhushan in 2000, the Dr. B.C. Roy National Award, the ICMR Research Award, fellowship of the National Academy of Sciences, India, and an honorary D.Sc. in Medical Sciences.

Colleagues remembered him as a clinician who combined scientific rigour with genuine warmth. Patients recalled a doctor who took time to explain, to listen, and to encourage lifestyle change rather than rely solely on medicines or procedures.

Dr. Harbans Singh Wasir left behind a dual legacy: a generation of cardiologists trained under his exacting yet encouraging guidance, and a public more aware that the best treatment for the heart often begins long before the first symptom appears. In an era when cardiac care was still developing in India, he insisted that prevention, education and holistic care were as important as any advanced technology.