Hyderabad: Why lakhs queue up to swallow a live fish every year

Every year, lakhs of people travel to Hyderabad for Fish Prasadam, a nearly 180-year-old tradition believed to provide relief from asthma and respiratory ailments. While devotees swear by its benefits, medical experts say there is no conclusive scientific evidence that it cures asthma. So why do the crowds keep growing? We went to Hyderabad to find out.