Algas Calcareas: The Primary Alternative Name
One of the most common alternative names for algae calcium is Algas calcareas. This name refers to the marine algae species, such as Lithothamnion superpositum or Mesophyllum superpositum, from which this popular dietary supplement is derived. Algas calcareas is found in the pristine ocean waters off the coast of South America, where the algae naturally mineralize by absorbing a variety of essential nutrients from the sea. When the algae reach the end of their life cycle, they detach and wash ashore, creating a mineral-rich sediment that is sustainably hand-harvested to produce supplements. The resulting powder is not a calcium extract, but rather a whole-food, plant-based calcium source that comes complete with a spectrum of trace minerals.
The Scientific and Common Naming
In addition to the name Algas calcareas, the source of algae calcium can be identified by other names, including the species-specific Lithothamnion algae, often referred to as maerl or coralline algae. The broader, more descriptive terms like "plant-based calcium" and "marine algae calcium" are also used to distinguish this unique source from mineral-derived versions like calcium carbonate. The variety of names speaks to the unique origin and composition of this supplement, which is a naturally occurring mixture of bone-building nutrients.
Why Algae Calcium is Different
Algae calcium differs significantly from rock-sourced alternatives in several key ways. Its primary advantage lies in its unique mineral matrix and porous structure, which contribute to better absorption and utilization by the body. Traditional calcium carbonate, derived from limestone or marble, is essentially a mineral compound with a dense structure that is often less bioavailable.
- Superior Absorption: Studies have shown that some forms of algal calcium have higher fractional absorption rates compared to calcium carbonate. This is partly due to its natural, plant-based origin, which the body can more readily process.
- Rich in Trace Minerals: Unlike basic mineral calcium, algae calcium provides a complex of other bone-supporting minerals, including magnesium, boron, zinc, and strontium. These work synergistically to enhance bone health, rather than just relying on calcium alone.
- Gentle on the Digestive System: Algae calcium is typically easier to digest and less likely to cause side effects such as constipation, bloating, or gas that are commonly associated with mineral-based calcium supplements.
- Sustainable Sourcing: The harvesting process for algae calcium, particularly for varieties like Algas calcareas, is often more sustainable, as it is collected from naturally calcified and shed algae rather than mining.
Comparison Table: Algae Calcium vs. Calcium Carbonate
| Feature | Algae Calcium (Algas Calcareas) | Calcium Carbonate |
|---|---|---|
| Source | Marine red algae (Mesophyllum superpositum, Lithothamnion) | Mined rock (limestone, marble) |
| Composition | Whole-food, multi-mineral complex | Single mineral compound |
| Key Minerals | Calcium, Magnesium, Boron, Zinc, Strontium, etc. | Primarily Calcium |
| Bioavailability | High; porous structure and plant-sourced | Lower; dense crystalline structure |
| Absorption | Enhanced by naturally included trace minerals | Depends heavily on stomach acid; less efficient |
| Digestive Impact | Generally gentle; less likely to cause discomfort | May cause constipation, bloating, or gas |
| Sustainability | Sustainably harvested from calcified remains | Mined; not a renewable resource |
Health Benefits and Clinical Research
The comprehensive mineral profile of algae calcium contributes to a range of potential health benefits, particularly related to bone health. Several studies have investigated its efficacy, with promising results for increasing bone density.
Clinical Findings
- Increased Bone Mineral Density (BMD): Human clinical trials have demonstrated that certain algae calcium formulations can not only slow bone loss but also increase bone mineral density in adults, an outcome not typically seen with traditional calcium supplements. One such study showed a continual increase in BMD over a seven-year period among women in their mid-60s.
- Improved Osteoblast Activity: Research has shown that algae calcium can be more effective at stimulating osteoblast activity (bone-building cells) and promoting mineralization compared to calcium carbonate and calcium citrate.
- Antioxidant Effects: The bioactive compounds found in marine algae provide antioxidant and anti-inflammatory properties, which help to reduce oxidative stress. This is significant for bone health, as oxidative stress can promote inflammation that triggers the breakdown of bone.
Considerations for Use
While the research is encouraging, some sources suggest the need for more independent human trials to fully establish the efficacy of algae-based calcium over other calcium supplements. As with any dietary supplement, it is crucial to consult with a healthcare provider before beginning a new regimen, especially for individuals with pre-existing conditions like kidney stones or hypercalcemia.
Conclusion
Algas calcareas is a prominent and fitting alternative name for algae calcium, a plant-based mineral source derived from red marine algae. This supplement is a whole-food source that stands apart from traditional rock-based options like calcium carbonate due to its superior bioavailability, comprehensive mineral profile, and gentler effect on the digestive system. Backed by clinical studies showing positive effects on bone mineral density, algae calcium represents a promising and potentially more effective approach to supporting long-term bone health for those seeking a more natural alternative.
For more detailed research, a 2011 study on the increase of bone mineral density following an algae-based supplementation regimen is available on the Nutrition Journal website.
