Lithothamnion Calcreum
Also known as: Lithothamnion calcareum, Red marine algae, Calcareous red algae, Aquamin
Overview
Lithothamnion calcareum, a species of red marine algae, is harvested from the Atlantic Ocean and used as a mineral supplement, particularly for its high calcium and magnesium content. It's investigated for bone health, anti-inflammatory properties, and colonic health benefits. Rich in bioavailable minerals, it may influence gene expression related to inflammation and pain. It is often marketed as a natural alternative to calcium carbonate supplements. Research includes preclinical and clinical studies, including randomized controlled trials (RCTs), but large-scale meta-analyses are limited. Evidence includes in vitro models, animal studies, and human RCTs with adequate sample sizes. Some systematic reviews and meta-analyses on related outcomes (bone health, inflammation) are available but not exclusively on Lithothamnion calcareum. It is considered a nutraceutical with potential applications in bone health, osteoarthritis management, and gut health support.
Benefits
Lithothamnion calcareum demonstrates several potential health benefits. It has shown promise in preserving bone structure and function in animal models on Western-style diets, suggesting potential benefits for bone density maintenance. In vitro studies indicate that it can reduce the expression of inflammatory and pain-related genes in osteoarthritis models, potentially contributing to symptom relief. A human trial showed that supplementation with Aquamin (containing Lithothamnion calcareum) altered protein expression profiles in the colon, which may be beneficial for colonic health. Postmenopausal women, individuals with osteoarthritis, or those at risk of bone density loss may benefit most from supplementation. Healthy adults may experience improved colonic mucosal protein profiles with potential long-term benefits.
How it works
Lithothamnion calcareum works through several mechanisms. It modulates inflammatory gene expression, including downregulating pain and inflammation-related genes in osteoarthritic tissue models. It provides bioavailable calcium and magnesium, supporting bone mineralization and structural integrity. Additionally, it alters colonic mucosal protein expression, potentially improving barrier function and tissue health. The algae interacts with the skeletal system by supporting bone remodeling and mineral density, with the immune system by modulating inflammatory pathways relevant to OA, and with the gastrointestinal system by influencing colonic mucosa and possibly microbiome composition. Gene *C1QTNF2* (CTRP2) is implicated in OA inflammation modulation.
Side effects
Lithothamnion calcareum is generally well-tolerated in human studies, with no significant adverse events reported over 90-day supplementation periods. No common side effects (>5%) have been reported in controlled trials. Uncommon and rare side effects are not documented in available studies. No documented significant drug interactions exist; however, caution is advised when combined with other calcium supplements or medications affecting mineral metabolism. Contraindications include hypersensitivity to marine algae or related products, and caution is advised in patients with hypercalcemia or severe renal impairment. Limited data exists for pregnant or lactating women, so use should be cautious in these populations.
Dosage
Human studies have used doses providing approximately 800 mg of calcium per day via Aquamin supplementation, which appears effective for colonic health modulation. Bone health doses extrapolated from animal studies suggest similar or slightly higher dosing may be beneficial. The maximum safe dose is not clearly established, but doses up to 800 mg of calcium per day were safe in trials. Standard calcium upper intake levels (~2000-2500 mg/day) apply. Daily supplementation with meals may enhance absorption. Mineral-rich extracts or powders standardized for calcium and magnesium content are preferred. The natural mineral matrix may improve bioavailability compared to synthetic calcium salts. Vitamin D and magnesium may enhance calcium absorption and utilization.
FAQs
Is Lithothamnion calcareum safe for long-term use?
Current evidence from 90-day trials indicates safety; longer-term studies are needed to fully assess long-term safety.
Can it replace traditional calcium supplements?
It may serve as a natural alternative with additional trace minerals and potential anti-inflammatory benefits, but consult with a healthcare provider.
How soon can benefits be expected?
Changes in colonic protein expression have been observed after 3 months; bone health benefits may require longer-term use.
Does it help with osteoarthritis pain?
In vitro data suggest anti-inflammatory effects, but clinical pain relief evidence is limited and further research is needed.
Are there any known allergies?
Individuals allergic to marine algae should avoid it. Discontinue use if any allergic reactions occur.
Research Sources
- https://pmc.ncbi.nlm.nih.gov/articles/PMC11945273/ – This in vitro study investigated the effects of Lithothamnion calcareum in an osteoarthritis model. The findings indicated that Lithothamnion calcareum reduced the expression of inflammatory and pain-related genes, including *C1QTNF2*, suggesting its potential as an anti-inflammatory agent in the context of osteoarthritis. However, the study was conducted in vitro, and clinical efficacy has not been directly tested.
- https://pmc.ncbi.nlm.nih.gov/articles/PMC2877502/ – This preclinical randomized controlled trial in female mice on a Western diet examined the impact of a mineral-rich extract from Lithothamnion calcareum on bone health. The results showed that the extract preserved bone structure and function, indicating its potential for osteoporosis prevention. While promising, these findings are based on an animal model, and human translation requires further clinical trials.
- https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2024.1430347/full – This study investigates the effects of Lithothamnion calcareum on equine bone explants. The results suggest that the algae has a positive effect on bone metabolism. This study provides further evidence for the potential bone health benefits of Lithothamnion calcareum.
- https://www.medrxiv.org/content/10.1101/2020.12.30.20249070v1.full-text – This randomized controlled trial examined the effects of Aquamin supplementation on colonic mucosal protein expression in humans. The study found that Aquamin supplementation altered colonic mucosal protein expression beneficially without adverse effects. However, the study had a small sample size, and clinical endpoints like disease outcomes were not assessed.
- https://www.science.gov/topicpages/a/algae+lithothamnion+calcareum – This page provides general information about Lithothamnion calcareum and its various applications. It highlights the algae's mineral-rich composition and its potential uses in dietary supplements and other products. The page serves as a resource for accessing research and information related to Lithothamnion calcareum.