Blowing into a conch shell could help alleviate symptoms of obstructive sleep apnoea (OSA), a condition affecting millions in the UK, according to a new study. The ancient practice, known as shankh blowing, involves deep inhalation and exhalation into a spiral shell, potentially strengthening upper airway muscles that collapse during sleep in OSA patients.
The trial, led by Dr Krishna K Sharma at the Eternal Heart Care Centre and Research Institute in Jaipur, India, involved 30 participants aged 19 to 65 with OSA. Half were taught shankh blowing, while the other half performed deep breathing exercises. Both groups practised for at least 15 minutes, five days a week.
After six months, the conch-blowing group showed a 34% reduction in daytime sleepiness, higher nighttime blood oxygen levels, and four to five fewer apnoea episodes per hour on average. Dr Sharma noted that the technique creates strong vibrations and airflow resistance, likely strengthening the throat and soft palate muscles.
Current standard treatment for OSA involves a continuous positive airway pressure (CPAP) machine, which can be uncomfortable. The researchers suggest shankh blowing as a low-cost alternative, though a larger trial is planned. Dr Erika Kennington of Asthma + Lung UK cautioned that the small scale means it is too soon to confirm effectiveness, and further research comparing it with proven strategies like lifestyle changes is needed.
