Bladderwrack Thallus Extract
Also known as: Bladderwrack, Kelp, Sea Wrack, Fucus vesiculosus
Overview
Bladderwrack (*Fucus vesiculosus*) is a type of brown seaweed found predominantly in the North Atlantic Ocean. It is characterized by its air-filled bladders that allow it to float. Rich in iodine, fiber, and various phytochemicals including phlorotannins and fucoxanthin, bladderwrack has been traditionally used for thyroid support, digestive health, and skin care. Its extracts are noted for promoting collagen production and may assist in reducing cellulite. Though its uses are well-documented in traditional practices, scientific research is still in the nascent stage, primarily relying on animal studies and in vitro assessments, with a significant scarcity of human trials.
Benefits
Bladderwrack offers several evidence-based benefits: 1) Skin Health: Topical administration has shown a 228% increase in collagen production in skin samples, indicating strong potential for improving skin texture and reducing cellulite. 2) Thyroid Function: Due to its high iodine content, this seaweed extract can support thyroid health, particularly in iodine-deficient populations, although substantial human evidence remains limited. 3) Anti-inflammatory and Antioxidant Effects: Compounds like phlorotannins and fucoxanthin provide antioxidant properties that may help lower inflammation. 4) Digestive Support: Alginic acid within bladderwrack can alleviate constipation, diarrhea, and other gastrointestinal issues. However, the overall evidence, especially regarding digestive benefits, arises mostly from in vitro and animal studies.
How it works
Bladderwrack's efficacy is linked to its iodine content, essential for synthesizing thyroid hormones, thus supporting thyroid function. It contains alginic acid and fucoidan, which act as dietary fibers, forming a protective barrier in the digestive tract that may lower cholesterol levels and stabilize blood glucose concentrations. Additionally, its antioxidant compounds scavenge free radicals, thereby mitigating oxidative stress and supporting overall cellular health.
Side effects
Generally recognized as safe when consumed in small amounts, bladderwrack can cause some side effects. Common adverse effects (>5%) include acne, particularly linked to its iodine content. Less frequent side effects (1-5%) consist of thyroid dysfunction, particularly in those with pre-existing conditions. Rarely (<1%), it could lead to hyperthyroidism, especially when combined with certain medications like lithium. Caution is advised for individuals on blood thinners due to potential interactions that may increase bleeding risks. Contraindications include those with iodine allergies, pregnant or breastfeeding women, and individuals taking specific medications. It's recommended for people with thyroid disorders to seek medical advice before using bladderwrack.
Dosage
The precise dosage for bladderwrack is not well established, but traditionally, a range of 5-10 grams of dried bladderwrack per day has been recommended, primarily for general health support. While there is no specifically defined optimal dosage, caution is essential to avoid exceeding the recommended iodine daily intake of 150 mcg. There is no particular timing necessary for consumption; it can be ingested as a tea or in capsule form. For topical use aiming at skin health, optimal amounts and forms should be determined based on product formulation. Due to its high fiber content, it’s advisable to ensure adequate hydration during supplementation.
FAQs
Is bladderwrack safe to use?
Bladderwrack is generally safe for most people when used appropriately, but pregnant or breastfeeding women and individuals with iodine allergies or thyroid disorders should avoid it without consulting a healthcare professional.
How should I take bladderwrack?
Bladderwrack can be consumed as a tea or in capsule form, and can also be applied topically for skin benefits.
What benefits can I expect?
Users may observe improved skin health and potential support for thyroid and digestive functions, though confirming long-term benefits requires more research.
Can bladderwrack aid in weight loss?
Bladderwrack is not robustly supported by evidence for weight loss and is not recommended for that purpose.
Research Sources
- https://www.healthline.com/nutrition/bladderwrack-benefits – This source provides an overview of the health benefits of bladderwrack including potential effects on skin health, thyroid function, and digestive support. It emphasizes the need for caution due to potential iodine content and limited human studies.
- https://www.webmd.com/diet/health-benefits-bladderwrack – WebMD discusses the various health benefits and practical uses of bladderwrack. It highlights concerns over iodine levels and interactions with medications, urging individuals to consult health professionals before use.
