The Body of Evidence 175 - Nasal Strips - do they pass the sniff test?
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Mar 12, 2026 Sophie, a regular co-host who turned nasal strip research into science communication, shares personal stories and research ties. The conversation covers types of nasal dilators and how they work. They compare objective airflow data with subjective improvements and explore why placebo effects are strong. Practical uses, limits for snoring and sleep-disordered breathing, and when ENT evaluation is warranted are discussed.
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How Nasal Strip Research Launched Sophie's SciComm Career
- Sophie credits reading a paper about pseudoscience of respiratory aids, including nasal dilators, as a path into science communication.
- Contacting the author led to meetings and a miniseries that ultimately launched her SciComm career.
Nasal Strips Improve Airflow But Evidence Is Sparse
- External nasal dilator strips measurably increase nasal airflow by opening the internal nasal valve and reducing resistance.
- A 2016 review found 33 products but only six had data, showing physiological airflow gains but little clinical validation.
Placebo Explains Perceived Sleep Benefits
- Randomized placebo-controlled trials in chronic nasal congestion showed users reported less congestion and better sleep with Breathe Right strips.
- The placebo group improved the same amount, indicating a strong subjective placebo effect in symptom reports.