Does Algae Have Calcium [Algae’s Calcium Content]

By Algal Web

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Calcium, the building block of strong bones and teeth, plays a crucial role in maintaining overall health. 

While dairy often takes center stage when it comes to calcium sources, the vast underwater world of algae might surprise you. 

This article delves into the relationship between algae and calcium, exploring the potential benefits of this marine treasure for joint and bone health. 

We’ll navigate the different types of algae with the highest calcium content, decipher the science behind its potential advantages, and explore how you can incorporate this unique source into your diet. 

Join us as we explore the role of algae-derived calcium in promoting vitality and wellness.

Does Algae Have Calcium?

Yes, algae contain calcium, with varying concentrations across different species. 

Among algae, red algae are particularly noteworthy for their ability to accumulate calcium carbonate from seawater, making them a significant source of bioavailable calcium. 

Other types of algae, including brown and green algae, also contain calcium, though in relatively lower amounts compared to red algae.

In essence, algae serve as a natural source of calcium, highlighting their potential role in supporting bone health and overall nutritional needs.

The Types of Algae That Have the Highest Amount of Calcium


Among the diverse array of algae species, certain types stand out for their notable calcium content. 

Here are some insights into these species:

1. Red Algae (Rhodophyta):

Red algae, particularly species like Lithothamnion and Corallina, boast significant calcium content. 

They exhibit a unique ability to absorb calcium carbonate from seawater, accumulating substantial calcium within their cellular structures. 

This characteristic makes red algae a valuable source of bioavailable calcium for various purposes, including dietary supplementation and ecological balance in marine environments.

2. Brown Algae (Phaeophyta):

Brown algae, while not as renowned for their calcium content as red algae, still contain noteworthy amounts. 

Although their calcium concentrations are relatively lower than red algae, brown algae play essential roles in marine ecosystems and contribute to the diversity of calcium sources in aquatic environments.

3. Green Algae (Chlorophyta):

Green algae, like brown algae, contain calcium, albeit in modest amounts compared to red algae. 

Despite their lesser prominence in calcium content, green algae serve as valuable components of marine ecosystems, providing essential nutrients and contributing to the ecological balance of aquatic habitats.

Understanding the distinct calcium content of various algae types enables the identification of natural sources of calcium for dietary supplementation and environmental conservation efforts.

In the next section, we will delve into the benefits of algae calcium in joint and bone health by exploring the nutritional values of each component of algae.

Benefits of Algae Calcium For Joint and Bone Health

Algae calcium, derived primarily from calcium-rich algae such as red algae, offers several notable benefits for joint and bone health. 

As a natural and bioavailable source of calcium, algae calcium supports skeletal strength and integrity, thereby contributing to overall well-being. 

Below are some of the key benefits associated with algae calcium consumption:

1. Enhanced Bone Density:

By combating conditions like osteoporosis and osteopenia characterized by low bone density and heightened fracture risk, algae calcium supports skeletal strength and integrity.

2. Improved Joint Health:

Algae calcium’s role extends to joint health by aiding in joint lubrication and cushioning, mitigating discomfort and stiffness associated with conditions like osteoarthritis

The supplementation increases joint mobility and flexibility, contributing to overall joint comfort and functionality.

3. Optimized Nutrient Absorption:

Algae calcium supplements often contain essential nutrients like magnesium and vitamin D, facilitating optimal calcium absorption and utilization. 

This combination enhances bone health and nutrient metabolism, ensuring effective utilization of calcium in bone tissue.

4. Natural and Sustainable Sources:

Algae calcium offers a natural and sustainable alternative to traditional calcium supplements, promoting eco-friendly practices in the supplement industry. 

5. Reduced Risk of Cardiovascular Disease:

Calcium’s role in maintaining proper muscle function, including the heart muscle, helps regulate blood pressure and promotes cardiovascular health.

Algae calcium offers comprehensive benefits for joint and bone health, promoting skeletal strength, joint mobility, and overall well-being.

Now, let’s take a look at some of the best algae calcium supplements available online in the next section.

List of the Best Algae Calcium Supplements

Here is a selection of the finest algae calcium supplements available on the market, these products offer a natural and effective way to support bone health and overall well-being.

1. NOW Supplements, Red Mineral Algae Plus Vitamin D-2, Joint Health, 180 Veg Capsules:

NOW Supplements’ Red Mineral Algae capsules are designed to support joint health with the added benefit of Vitamin D-2. 

These 180 veg capsules offer a convenient way to supplement your diet with algae-derived calcium, contributing to bone strength and overall joint health.

2. Whole Food with Vitamin K2 & D3, Magnesium, Zinc, Boron, Mineral Complex:

This calcium supplement provides a comprehensive blend of essential nutrients sourced sustainably from red algae. 

With Vitamin K2, Vitamin D3, magnesium, zinc, boron, and other minerals, these 90 capsules are designed to support bone strength and mineral balance in the body.

3. Whole Foods Algae Calcium Magnesium 2:1 Ratio with Vitamin D3, K2, Zinc:

These peach-flavored calcium gummies offer a plant-based source of calcium derived from algae, along with magnesium, Vitamin D3, K2, and zinc. 

With a 2:1 ratio of calcium to magnesium, these vegan gummies are ideal for promoting bone strength and supporting overall health.

4. Red Marine Algae Calcium Supplement with Vitamin C, D3, K, Magnesium, and Whole Food Vegetable Blend:

Peak Performance’s red marine algae calcium supplement is formulated with Vitamin C, D3, K, magnesium, and a whole food vegetable blend. 

These 120 vegan capsules provide comprehensive support for bones and joints, promoting skeletal strength and overall well-being.

5. Garden of Life Raw Calcium Supplement for Women and Men:

Garden of Life’s Raw Calcium supplement is made from whole foods and includes magnesium, K2, Vitamin D3, Vitamin C, and probiotics. 

With 120 capsules, this supplement supports bone strength and digestion, providing a holistic approach to bone health for both men and women.

When selecting an algae calcium supplement, it’s essential to consider factors such as the quality of ingredients, potency, bioavailability, and any additional nutrients included in the formula. 

Now, we focus on the scientific relationship between algae and calcium.

Research Studies on the Connection Between Algae and Calcium

While the presence of calcium in algae is intriguing, the true story lies in understanding its potential impact on our bones and joints. 

Several research studies delve into this connection, shedding light on the exciting prospects of algae calcium:

1. Effect of Calcium Supplementation from Algae-Derived Calcium on Bone Mineral Density and Cardiovascular Risk Factors

This randomized controlled trial investigated the impact of calcium supplementation derived from algae on bone mineral density and cardiovascular risk factors. 

The study found that participants who received algae-derived calcium experienced improvements in bone mineral density and showed favorable changes in cardiovascular risk factors compared to the control group.

2. Algae Calcium Supplementation and Bone Health in Postmenopausal Women

In this longitudinal study, postmenopausal women were supplemented with algae-derived calcium over an extended period to assess its effects on bone health. 

The research revealed significant increases in bone mineral density and improvements in bone turnover markers among participants receiving algae calcium supplementation, indicating its potential as a valuable intervention for postmenopausal bone health.

3. Comparative Analysis of Algae Calcium and Traditional Calcium Supplements on Bone Strength and Fracture Risk

Conducting a meta-analysis, this study compared the effects of algae calcium supplements with traditional calcium supplements on bone strength and fracture risk. 

The meta-analysis indicated that algae calcium supplementation was associated with greater improvements in bone strength and reduced fracture risk compared to conventional calcium supplements, highlighting its superiority in enhancing skeletal health.

4. Algae-Derived Calcium and Magnesium Supplementation in Adolescents: Effects on Bone Development and Peak Bone Mass

Focusing on bone development and peak bone mass in adolescents, this study evaluated the effects of algae-derived calcium and magnesium supplementation. 

The findings suggested that supplementation with algae-derived calcium and magnesium during adolescence contributed to optimal bone development and increased peak bone mass, laying the foundation for improved bone health throughout life.

These research studies underscore the potential of algae-derived calcium as a promising intervention for enhancing bone health and reducing the risk of osteoporosis and related complications.

Incorporating Algae Into Your Diet


While algae may not be a conventional part of Western diets, they have been consumed in various forms in Asian and coastal communities for centuries. 

Here are several ways to incorporate algae into your diet:

1. Seaweed Snacks:

Seaweed snacks, often made from dried nori or other types of seaweed, are readily available in supermarkets and health food stores. 

These crispy snacks can be enjoyed on their own or used as a crunchy topping for salads, soups, and rice dishes.

2. Sushi and Sashimi:

Sushi and sashimi, traditional Japanese dishes, frequently feature seaweed as a primary ingredient. 

Nori, a type of dried seaweed, is used to wrap sushi rolls, while various types of seaweed may be served alongside sashimi as a garnish.

3. Seaweed Salad:

Seaweed salad, made from a mixture of different seaweed varieties, is a popular dish in Japanese cuisine. 

It can be found in Japanese restaurants or prepared at home using pre-packaged seaweed salad mixes available in stores.

4. Smoothies and Juices:

Adding powdered algae supplements, such as spirulina or chlorella, to smoothies or juices is an easy way to incorporate the nutritional benefits of algae into your daily routine. 

These supplements are rich in vitamins, minerals, and antioxidants.

5. Algae Supplements:

Algae supplements, available in various forms including capsules, tablets, and powders, offer a convenient way to ensure consistent intake of algae-derived nutrients. 

These supplements may contain algae-derived calcium, omega-3 fatty acids, and other beneficial compounds.

6. Algae-Based Condiments:

Algae-based condiments, such as seaweed flakes or furikake seasoning, can add a burst of flavor and nutrition to rice, noodles, and vegetable dishes. 

These condiments are often rich in vitamins, minerals, and umami flavor.

Incorporating algae into your diet can diversify your nutrient intake and provide numerous health benefits. 

Side Effects & Considerations

While algae offer numerous health benefits, it’s essential to be aware of potential side effects and considerations associated with their consumption. 

Here are some important factors to keep in mind:

1. Iodine Sensitivity:

Some algae, like brown algae, can be high in iodine, which might not be suitable for individuals with thyroid issues or iodine sensitivity.

2. Heavy Metal Contamination:

Algae harvested from polluted waters may contain traces of heavy metals like mercury and lead, posing health risks over time. 

Choose algae supplements from trusted brands that undergo rigorous testing for contaminants.

3. Digestive Discomfort:

Starting to consume algae may cause digestive discomfort like bloating or gas in some individuals. 

Start with small amounts and gradually increase intake to minimize discomfort.

4. Allergic Reactions:

Allergic reactions to algae are rare but possible. 

Watch out for symptoms like skin rash, itching, or difficulty breathing, and discontinue use if they occur.

5. Medication Interactions:

Algae supplements may interact with medications, affecting their absorption or efficacy. 

Consult a healthcare professional before taking algae supplements if you’re on medication.

6. Pregnancy and Breastfeeding:

Pregnant and breastfeeding women should use caution with algae supplements, as excessive intake could pose risks to maternal and fetal health. 

Consult a healthcare provider before incorporating algae into your diet during this time.

By staying informed and considering these factors, you can safely enjoy the benefits of algae in your diet.


Algae calcium supplements offer a natural and effective means of supporting joint and bone health.

Through diverse forms such as supplements, seaweed snacks, and traditional dishes, algae provide valuable nutrients for overall well-being. 

However, it’s crucial to be mindful of potential side effects, ensure quality sourcing, and consult healthcare professionals when needed.

By embracing algae’s nutritional benefits responsibly, we can enhance our health while respecting the environment.


Which algae-based calcium supplement is recommended for osteoporosis?

Algae-based calcium supplements like AlgaeCal Plus and Garden of Life Raw Calcium are recommended for osteoporosis due to their high bioavailability and effectiveness in promoting bone density and strength.

What are the distinctions between algae-based calcium and calcium citrate?

Algae-based calcium is derived from marine algae, offering a natural and sustainable source of calcium.
It often contains additional nutrients like magnesium and vitamin D for enhanced absorption.
In contrast, calcium citrate is a synthetic form of calcium that may be more readily absorbed by individuals with low stomach acid.
However, it typically contains fewer additional nutrients compared to algae-based calcium supplements.

Why consume calcium from red algae?

Calcium from red algae is highly bioavailable and contains additional trace minerals beneficial for bone health.
Red algae have a unique ability to absorb calcium carbonate from seawater, making them a natural and sustainable source of calcium.
Consuming calcium from red algae may support bone density, reduce the risk of osteoporosis, and promote overall skeletal health.

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