Evidence supporting the use of: Sea salt
For the health condition: Sinus Infection

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Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Sea salt is commonly used in saline nasal irrigation, a supportive therapy for sinus infections (sinusitis). The practice involves rinsing the nasal passages with a saline solution, which is typically made by dissolving sea salt (or non-iodized salt) in sterile or distilled water. Numerous clinical studies and systematic reviews have demonstrated that saline nasal irrigation can reduce symptoms of sinus infection, such as nasal congestion, discharge, and facial pain. It works by thinning mucus, improving mucociliary clearance, and helping flush out allergens, pathogens, and inflammatory mediators from the nasal passages.

Organizations such as the American Academy of Otolaryngology–Head and Neck Surgery and the Cochrane Collaboration endorse saline irrigation as an adjunctive therapy for both acute and chronic sinusitis. The evidence supporting its use is rated moderate to strong, with benefits observed in both adults and children. Although some studies do not specify the type of salt, sea salt is widely used because it is free of additives and generally well-tolerated. While sea salt itself does not possess unique medicinal properties beyond its ability to create a physiologically appropriate saline solution, its use for sinus irrigation is grounded in both scientific validation and a long history of traditional use. Overall, saline nasal irrigation with sea salt is a scientifically supported, safe, and effective adjunctive treatment for sinus infections.

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