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Sea Moss Health Benefits: A Promising Supplement

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Sea moss, also known as Irish moss, is a type of edible seaweed that is available in various colors and often found in fortified foods. It is a source of essential minerals like calcium and iodine, which are crucial for building bone mass and maintaining muscle strength. In addition, sea moss is rich in vitamins B, C, and D, and high in fiber, which helps keep you feeling full and may support healthy weight management. Ongoing research also indicates it can be powerful for arthritis management.

Our Pick for the Best Sea Moss Supplement

Sea moss is a nutrient-rich food that provides many health benefits. However, it's essential to purchase high-quality sea moss. Wildcrafted Sea Moss is our editor pick.

The Benefits of Sea Moss on Health

Boosting Immune System Function

Sea moss is rich in vitamins and minerals that support immune system function. Among these are vitamin C, magnesium, and zinc. Incorporating sea moss into your diet can strengthen your body's natural defenses against illnesses and infections.

Sea moss is a nutrient-dense superfood that can be a valuable addition to a balanced diet. Its high fiber, vitamin, and mineral content contribute to various health benefits, such as supporting immune function, promoting digestive health, and enhancing thyroid function.

Dr. Richard Alexander, MD

Lowering Cholesterol Levels

Studies have shown that sea moss may help reduce cholesterol levels, ultimately lowering the risk of heart disease. Incorporating this seaweed into your daily routine can contribute to better heart health and overall well-being.

Reducing Blood Pressure

Potassium, which is abundant in sea moss, has been found to help reduce blood pressure levels. Maintaining healthy blood pressure is essential for preventing heart disease and other health complications.

Promoting Thyroid Function and Health

Sea moss is a natural source of iodine, a mineral crucial for healthy thyroid function. A well-functioning thyroid is essential for regulating metabolism, growth, and development in the body.

Aiding in Weight Management and Weight Loss

High in fiber, sea moss can help you feel full and satisfied, leading to reduced calorie intake and weight loss. Including sea moss in your diet can support healthy weight management and contribute to overall wellness.

Supporting Heart Health

The antioxidants and anti-inflammatory compounds present in sea moss can reduce the risk of heart disease. By incorporating sea moss into your diet, you can provide your heart with essential nutrients to keep it healthy and strong.

Enhancing Brain Health and Function

Minerals such as magnesium found in sea moss can support brain health and function. Nourishing your brain with these essential nutrients can improve cognitive function and overall mental well-being.

Our Pick for the Best Sea Moss Supplement

Sea moss is a nutrient-rich food that provides many health benefits. However, it's essential to purchase high-quality sea moss. Wildcrafted Sea Moss is our editor pick.

Encouraging Healthy Digestion

High in dietary fiber, sea moss promotes healthy digestion and bowel movements. Regular consumption of sea moss can help maintain a healthy digestive system and support gut health.

Providing Essential Nutrients for Overall Health

Sea moss is a rich source of essential vitamins and minerals, including iodine, iron, calcium, and magnesium. Incorporating this seaweed into your diet can help you meet your daily nutrient requirements and maintain optimal health.

Sea Moss and Carpal Tunnel Syndrome Relief

In a small study conducted by Gene Spiller, PhD, director of the Health Research and Studies Center in Los Altos, California, an herbal supplement containing sea-algae extract, specifically BioAstin, demonstrated a reduction in carpal tunnel pain among the participants. The study consisted of 13 people with carpal tunnel syndrome, and a comparison group of seven patients received a placebo pill. Those who received BioAstin reported experiencing less pain than the placebo group.

BioAstin and Its Impact on Rheumatoid Arthritis

Alongside the study on carpal tunnel syndrome, Dr. Spiller conducted a companion study on the effects of BioAstin on rheumatoid arthritis pain. This study involved 14 people with rheumatoid arthritis and another comparison group of seven patients taking a placebo. Similar to the carpal tunnel study, patients who took BioAstin reported reduced pain. However, due to the participants continuing to take their prescribed arthritis medications, Dr. Spiller was unsure of how much of the effect could be attributed to the supplement.

Astaxanthin: The Active Ingredient in BioAstin

BioAstin contains an algae extract known as astaxanthin, a powerful antioxidant responsible for the pink hue found in shrimp and salmon. Antioxidants are crucial for neutralizing harmful free radicals in the body. However, the ideal form, dosage, and frequency of antioxidant intake remain unclear.

Incorporating Sea Moss into Your Diet

Integrating sea moss into your daily routine can be simple and convenient. Here are a few ways to include this nutrient-rich seaweed in your meals:

  1. Smoothies: Blend sea moss into your favorite smoothie recipes for an added nutritional boost. Its mild taste won't overpower other flavors, making it an ideal addition to any smoothie.
  2. Soups and Stews: Add sea moss to soups and stews, subtly thickening and enhancing the dish's nutrient content.
  3. Homemade Gel: Create a sea moss gel by soaking the dried seaweed in water, then blending it until smooth. This supplement can be added to various recipes for a healthy twist, including sauces, dressings, and desserts.
  4. Baked Goods: Incorporate sea moss gel into your favorite baked goods, such as bread, muffins, or cookies. This will add essential nutrients to your treats without significantly altering the taste or texture.
  5. Teas and Beverages: Sea moss gel can be mixed into teas, coffee, or other beverages, providing a boost of vitamins and minerals to your daily drinks.

The Complex Role of Antioxidants in Human Health

L. Gail Darlington, MD, FRCP, a rheumatologist at Epsom Hospital in England and an expert on the effects of diet on arthritis, explains that antioxidants play a complex role in human health. She cautions against relying solely on supplements containing artificial antioxidants, as the benefits of antioxidants are best derived from a diet rich in fish and vegetables.

Dr. Darlington believes that "it is too simplistic to give antioxidants in supplement form," and instead, promotes consuming a balanced, antioxidant-rich diet to help combat free-radical diseases.

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More About Sea Moss

Sea moss is a natural thickener found in the coastal waters of Ireland, Northern Europe, and the United States. Its primary use is as a source of carrageenan, a natural thickener used in dairy and non-dairy milk, ice cream, and desserts. It's also a vegan ingredient that can be added to soups, stews, drinks, and sauces. Sea moss is an excellent replacement for eggs in recipes, and its high fiber content provides a range of health benefits, such as improving cholesterol and blood sugar levels.

Sea moss is a source of antioxidants, which help protect our cells from damage and reduce inflammation. It contains high levels of vitamin C, which strengthens the immune system and improves resistance against disease. Its anti-inflammatory properties can speed up wound and cut healing, and treat respiratory conditions like bronchitis and asthma. It is also rich in minerals that have been shown to reduce inflammation throughout the body.

Sea moss also boosts thyroid function, which can help with weight loss and regulating metabolism. Its high iodine content is responsible for this, with research showing that it contains about 47 mg of iodine per gram, more than what you would get from a can of tuna or a glass of milk. However, consuming too much sea moss can lead to iodine toxicity, which can damage the thyroid. Therefore, it's important to consume it in moderation and speak with a healthcare professional if you have thyroid problems or are pregnant.

Like many other types of seaweed, sea moss is a source of heavy metals, which can be a concern if you plan to add it to your diet or take supplements. It can absorb and store toxic amounts of heavy metals from the environment, which is why it's best to consume it in moderation and purchase high-quality sea moss from reputable suppliers. Additionally, people with autoimmune conditions like Hashimoto's disease may be sensitive to iodine and should consult their doctor before consuming sea moss.

Overall, sea moss is a nutrient-rich food that provides many health benefits. However, it's essential to consume it in moderation, purchase high-quality sea moss, and consult with a healthcare professional before adding it to your diet, especially if you have a pre-existing medical condition.

Precautions and Considerations

While sea moss offers numerous health benefits, it's essential to be mindful of a few precautions and considerations:

  1. Allergies: If you have a known allergy to seaweed or iodine, it is best to avoid sea moss consumption, as it could cause an allergic reaction.
  2. Iodine Intake: Sea moss is high in iodine, which is essential for thyroid health. However, excessive iodine intake can be harmful. If you have thyroid issues or are taking thyroid medication, consult with your healthcare provider before incorporating sea moss into your diet.
  3. Pregnancy and Breastfeeding: There is limited research on the safety of sea moss consumption during pregnancy and breastfeeding. It is advisable to consult with your healthcare provider before incorporating sea moss into your diet during these times.
  4. Quality: Ensure you're consuming high-quality sea moss from reputable suppliers. Low-quality or contaminated sea moss could contain harmful substances, reducing its health benefits and potentially causing adverse effects.

By being mindful of these precautions and considerations, you can safely enjoy the numerous health benefits of sea moss.

The Need for Further Research

Cyanotech, the manufacturer of BioAstin, funded both studies led by Dr. Spiller. As a result, larger and more independent clinical trials are necessary to confirm the potential benefits of sea moss and astaxanthin in treating arthritis and carpal tunnel pain.

In conclusion, while the initial studies conducted by Dr. Spiller suggest that sea moss, specifically in the form of BioAstin, may provide relief for carpal tunnel syndrome and rheumatoid arthritis pain, more extensive research is needed to verify these findings. Furthermore, maintaining a healthy, antioxidant-rich diet is essential for overall health and may improve arthritis management.


  1. Astaxanthin: A Review of the Literature This article published in the journal Nutrients offers a comprehensive review of the literature on the potential health benefits and applications of astaxanthin, the active ingredient in BioAstin.
  2. Dietary antioxidants and long-term risk of dementia This study published in the Archives of Neurology examines the role of dietary antioxidants in long-term risk of dementia and supports the importance of a balanced, antioxidant-rich diet.
William H. McDaniel, MD

Dr. Robert H. Shmerling is the former clinical chief of the division of rheumatology at Beth Israel Deaconess Medical Center (BIDMC), and is a current member of the corresponding faculty in medicine at Harvard Medical School.

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