A narrative review of thalassotherapy and the health benefits of seawater and coastal climates

Thalassotherapy refers to the therapeutic use of controlled exposure to marine environments and their natural elements for health promotion. This review aims to summarize evidence-based clinical applications of thalassotherapy. A narrative review was conducted, with PubMed searched in September 2024 for clinical studies evaluating the efficacy of thalassotherapy. Relevant evidence was summarized and critically analyzed. A total of 566 articles were identified, of which 16 studies met the inclusion criteria. Thalassotherapy was primarily studied for its effects on skin disorders, including psoriasis, atopic dermatitis, and vitiligo, as well as rheumatic conditions like fibromyalgia and ankylosing spondylitis. The intervention showed significant improvements in disease severity and patient quality of life, with the strongest evidence seen in psoriasis and fibromyalgia treatment. Thalassotherapy appears beneficial for symptom relief in several conditions, particularly skin and rheumatic disorders. However, further research is needed to quantify its effect size, evaluate long-term benefits, assess potential risks, and identify factors that may influence treatment outcomes.