Health Benefits of Sea Moss
Nutrition, Risks, and How to Use This Trending Superfood
What Is Sea Moss?
Sea moss, also called Irish moss or red seaweed, is a type of algae found along the rocky coastlines of North America, Europe, and the British Isles. Traditionally harvested for its carrageenan content—a thickening agent used in foods like ice cream, dairy alternatives, jellies, and even toothpaste—it has recently gained popularity as a superfood supplement.
Sea moss is naturally vegan, gluten-free, and mineral-rich, often consumed as sea moss gel, powders, capsules, or gummies.
Sea Moss Nutrition
A small serving of sea moss is surprisingly nutrient-dense.
Two tablespoons of sea moss contain:
- Calories: 5
- Fat: 0 g
- Cholesterol: 0 mg
- Sodium: 7 mg
- Carbohydrates: 1 g
- Fiber: 0 g
- Protein: 0 g
Key nutrients in sea moss include:
- Vitamin B2
- Iodine
- Calcium
- Potassium
- Magnesium
- Zinc
Potential Health Benefits
Scientific research on sea moss is still limited, but early findings suggest several possible benefits.
- May support Parkinson’s disease research
Early lab studies on worms suggest sea moss extract may reduce stiffness and slowness of movement. Human research is needed to confirm its effects. - May boost the immune system
Some studies suggest sea moss may prevent the growth of harmful bacteria like Salmonella. While promising, this hasn’t been tested in humans. - Supports thyroid function
Sea moss contains iodine, an essential nutrient for thyroid hormone production. Adequate iodine supports metabolism, heart rate, and energy levels. However, too much iodine can be harmful, so use caution if you already take thyroid medications.
Side Effects and Risks
While sea moss is nutrient-rich, overuse or poor sourcing can pose health risks.
- Digestive issues: High doses may cause nausea, bloating, vomiting, or diarrhea.
- Intestinal inflammation: Some seaweeds naturally contain poligeenan, a degraded form of carrageenan linked to intestinal irritation and ulcers in animal studies.
- Thyroid problems: Excess iodine can cause goiter (enlarged thyroid) or thyroid dysfunction.
- Heavy metal exposure: Seaweed grown in polluted waters may absorb arsenic, mercury, or lead.
- Blood-thinning effects: People on anticoagulant medications should avoid sea moss.
- Pregnancy and breastfeeding: Not enough research exists on its safety—avoid use in these cases.
Sea Moss Supplements
Sea moss is available in gel, powder, capsule, or gummy form. Supplements often mask its natural fishy taste and make dosing easier. Regardless of form, portion control is key.
- Recommended portion: About 2 tablespoons per day
How to Prepare Sea Moss at Home
You can make sea moss gel at home:
- Wash thoroughly to remove sand and debris.
- Soak in cold water for 24 hours, changing water often.
- Blend soaked moss with water until smooth (start with 1 cup water, add more if needed).
- Refrigerate for at least 2 hours until gel thickens.
Prepared gel can last up to 2 weeks in the refrigerator.
Ways to use sea moss gel:
- Add to smoothies
- Mix into soups or stews
- Incorporate into baked goods
Takeaway
Sea moss is a nutrient-rich algae that provides iodine, calcium, magnesium, and zinc. It may support immune health, thyroid function, and digestion, but evidence in humans is still limited. Overuse can lead to digestive upset, thyroid problems, or heavy metal exposure. If you’re considering adding sea moss to your diet, consult your doctor first—especially if you have thyroid disease, are pregnant, or take blood thinners.
