Sea moss / Irish moss
A red seaweed surging in popularity. Real mineral and iodine content; the broader 'cures everything' wellness marketing far exceeds the evidence.
Limited modern clinical trial data. Mineral content is real but variable. Most marketing claims are aspirational.
Sea moss (Chondrus crispus and Genus Gracilaria) is a red seaweed found on Atlantic coasts. It's the source of carrageenan (a food thickener) and contains a meaningful spread of minerals — iodine, potassium, calcium, magnesium, iron — plus polysaccharides with mild immune and gut effects. The recent wellness boom positioned it as a 'cure-all' superfood; the actual evidence is much narrower. It's a legitimate mineral / iodine source and a reasonable addition to a varied diet, but most therapeutic claims (skin, libido, energy, longevity) aren't backed by trial data. Watch iodine intake — sea moss can deliver excessive amounts.
- Form
- Raw sea moss (rinsed, soaked, blended into gel), sea moss gel (premade), sea moss capsules / powder. Choose wild-harvested or controlled-cultivation sources with heavy-metal testing.
- Dose
- 1–2 tablespoons of sea moss gel daily, or 500–1,000 mg powder. Modest amounts only — iodine content can be significant.
- Timing
- With food, anytime.
- Schedule
- Daily, but watch cumulative iodine.
- Side effects
- Generally well-tolerated in moderate amounts. Excess iodine can cause acne, thyroid dysfunction (both directions). High consumption can deliver too much potassium.
- Interactions
- Thyroid medication — iodine content can interact (both directions). Anticoagulants — vitamin K and modest blood-thinning effects. Lithium — additive thyroid suppression.
- Contraindications
- Autoimmune thyroid disease (Hashimoto's, Graves' — iodine can trigger flares). On thyroid medication without monitoring. Kidney disease (potassium content). Pregnancy / breastfeeding (iodine balance is critical).
- Lab markers
- TSH, free T4, free T3 if running daily. Urinary iodine to check intake.
- Food sources
- Sea moss has been a traditional food in Ireland, the Caribbean, and West Africa for centuries — pudding, blancmange, sea moss drinks.
Pairs with
Selenium (essential partner if running enough sea moss to bump iodine — protects the thyroid). Other algae / seaweeds for mineral spread.
within Algae, sea & superfoods