Calcium is a mineral that plays a role in overall health, contributing to bone strength, muscle function, and nerve signaling. Green calcium offers a plant-derived option for individuals seeking to support their calcium intake naturally. It is gaining attention as a natural alternative to traditional sources.
Understanding Green Calcium
Green calcium refers to calcium sourced from marine algae, specifically like Lithothamnion calcareum, a type of red seaweed. It receives the “green” designation due to its natural, plant-based origin and the sustainable methods in its harvesting. Unlike calcium from mined minerals or synthetic processes, it originates from a living organism.
This marine algae develops a unique porous, honeycomb-like structure as it absorbs minerals from the ocean. This unique structure sets it apart from other calcium supplements. While many leafy green vegetables also contain calcium, the term “green calcium” in a commercial context generally points to these specialized algal sources. After about five years, these calcium-rich plants naturally calcify and settle on the seabed. They are then sustainably harvested, cleaned, dried, and milled into a fine powder.
Nutritional Advantages
Green calcium from marine algae offers nutritional advantages due to its multi-mineral complex. It contains not only calcium but also other naturally occurring minerals like magnesium, boron, zinc, and selenium, totaling over 70 trace minerals. This synergistic blend may enhance the body’s absorption and utilization of calcium compared to isolated forms.
The bioavailability of calcium from Lithothamnion calcareum is high, with reports indicating it can be greater than 86%, a figure higher than some mineral-derived calcium carbonate supplements. This improved absorption is partly attributed to the algae’s unique porous structure, which provides a larger surface area for nutrient uptake. Green calcium is also suitable for plant-based diets, providing a whole-food derived mineral source.
Incorporating Green Calcium Sources
Green calcium is primarily available in supplement form, with most products derived from Lithothamnion calcareum marine algae. These supplements typically come as powders or capsules, offering a convenient way to increase calcium intake. For example, a single level teaspoon of the powder can provide approximately 95% of the recommended daily intake for adults.
Beyond supplements, it is important to consider other plant-based foods that contribute to calcium intake. These include leafy greens like kale and okra, fortified plant milks, and tofu. When considering any calcium supplement, including green calcium, consult a healthcare professional. They can provide guidance on appropriate dosages to ensure individual needs are met without exceeding safe limits, typically 1,500mg or less per day.