Evidence supporting the use of: Lithothanmion
For the health condition: Calcium Deficiency
Synopsis
Source of validity: Scientific
Rating (out of 5): 3
Lithothamnion is a genus of red algae (commonly known as calcified seaweed) that is rich in calcium and other trace minerals. Its use to support or treat calcium deficiency is primarily justified by scientific evidence. Lithothamnion species, such as Lithothamnion calcareum, are harvested, processed, and sold as natural calcium supplements. The calcium in Lithothamnion is present as calcium carbonate and, to a lesser degree, magnesium and trace elements. Several in vitro and animal studies have demonstrated the bioavailability of calcium from Lithothamnion, and some small human clinical trials have shown that supplementation can increase serum calcium levels and improve bone mineral density or markers of bone turnover. For example, a randomized controlled trial published in Nutrition Journal (2012) found that Lithothamnion-derived calcium was well tolerated and yielded similar or improved outcomes compared to conventional calcium carbonate in postmenopausal women. However, large-scale clinical trials are limited, and more research is needed to confirm long-term efficacy and safety. In summary, Lithothamnion is scientifically validated as a natural calcium source, and its use for calcium deficiency is supported by moderate-quality evidence, though not as robust as for pharmaceutical calcium salts.
