Salt therapy, used since ancient times, evolved in the 19th century through treatments in European and Russian salt mines. Today, speleotherapy refers to breathing the stable, mineral-rich air of natural caves, while halotherapy involves inhaling pure sodium chloride (NaCl) particles in a controlled indoor environment (18–24°C, 40–60% humidity). These NaCl aerosols, the key agents in both methods, reach deep into the respiratory system, offering antibacterial, anti-inflammatory, and mucus-clearing benefits. Clinical studies support salt therapy as an effective complementary treatment for conditions like sinusitis, bronchitis, asthma, COPD, and bronchiolitis. It also helps reduce IgE levels and supports respiratory health in those exposed to damp indoor environments. Salt therapy is considered safe and well-tolerated.
