Synopsis

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

Cloudberry (Rubus chamaemorus) is justified for use in the prevention and treatment of scurvy on scientific grounds. Scurvy is caused by a deficiency of vitamin C (ascorbic acid), and cloudberries are known to be particularly rich in this essential nutrient. Historical records from northern Europe and Arctic regions, where cloudberries grow, indicate that indigenous peoples and explorers used cloudberries as a traditional remedy to prevent scurvy during long winters when other fresh produce was unavailable. Analyses of the berry’s composition confirm that cloudberries contain high concentrations of vitamin C—up to 158 mg per 100 g, which is several times higher than that of oranges. Scientific studies have validated the vitamin C content of cloudberries and their role in preventing scurvy, a disease now well understood to be caused by ascorbic acid deficiency. While modern clinical trials specifically using cloudberry for scurvy are lacking—largely because vitamin C deficiency is rare in developed countries—the established biochemical mechanism and the berry's nutrient profile provide strong evidence. Thus, both traditional use and modern nutritional science support the efficacy of cloudberries for this purpose. However, direct clinical trial data are limited, so the evidence rating is not at the maximum.

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