A centuries-old breathing practice could offer new hope for millions suffering from obstructive sleep apnoea (OSA) — a condition that causes loud snoring, interrupted breathing, and increased risks of heart disease, stroke, and high blood pressure.
Researchers in India have discovered that shankh blowing — the act of blowing into a conch shell — may significantly reduce symptoms. The technique, rooted in traditional culture, involves deep inhalation followed by a strong, sustained exhalation through pursed lips, producing vibrations and resistance that strengthen the throat and upper airway muscles.
In a small trial at the Eternal Heart Care Centre and Research Institute in Jaipur, 30 participants aged 19–65 with OSA practiced shankh blowing for at least 15 minutes a day, five days a week, over six months. The results were striking:
- Daytime sleepiness dropped by 34%
- Sleep quality improved compared to those doing deep breathing exercises
- Night-time blood oxygen levels increased
- Participants experienced 4–5 fewer breathing pauses (apnoeas) per hour
Lead researcher Dr Krishna K. Sharma called the method a “promising alternative” to the standard CPAP machine — a device that keeps airways open during sleep but can be uncomfortable.
“The unique spiral structure of the shankh and the vibrations it produces likely help tone muscles that collapse during sleep,” Sharma explained. “It’s simple, low-cost, and medication-free.”
The team now plans a larger, multi-hospital study to test its long-term benefits and its potential for patients with severe OSA.
The findings come as new research warns of a possible link between OSA and lung cancer. A U.S. study of 2.4 million adults found those with OSA were 21% more likely to develop lung cancer, possibly due to night-time oxygen deprivation or related lifestyle factors.
Experts urge early screening and intervention for OSA, not just to improve sleep, but potentially to reduce long-term health risks.
