Evidence supporting the use of: Lithothamnion (unspecified)
For the health condition: Calcium Deficiency
Synopsis
Source of validity: Scientific
Rating (out of 5): 3
Lithothamnion is a genus of red marine algae (seaweed) that is commonly used as a natural source of calcium, particularly in dietary supplements aimed at supporting bone health and treating calcium deficiency. The rationale for its use is based on its high mineral content, as Lithothamnion algae accumulate significant amounts of calcium carbonate, along with magnesium and trace minerals, from seawater. Several laboratory analyses confirm its calcium content, making it a viable ingredient for calcium supplementation. There is moderate scientific validation: some clinical studies and in vitro research suggest that calcium derived from Lithothamnion is bioavailable, meaning it can be absorbed and utilized by the human body, and may contribute to improved bone mineral density in populations at risk for calcium deficiency. However, large-scale, long-term clinical trials directly evaluating its effectiveness against calcium deficiency in humans are limited. Most evidence comes from compositional analysis and small-scale human or animal studies. Regulatory authorities generally recognize marine-derived calcium as a legitimate source of supplemental calcium, but do not single out Lithothamnion as superior to other calcium forms (e.g., calcium carbonate from rock). In summary, the use of Lithothamnion for calcium deficiency is supported by scientific evidence regarding its mineral content and bioavailability, though high-quality, direct clinical evidence is moderate.
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