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Ascophyllum Nodosum Seaweed Powder

Also known as: Ascophyllum nodosum, Knotted wrack, Bladder wrack

Overview

Ascophyllum nodosum, commonly known as knotted wrack or bladder wrack, is a brown seaweed species prevalent in the North Atlantic Ocean. It is characterized by its high iodine content, carbohydrates, and fatty acids, including oleic acid. Traditionally, it has been used to address iodine deficiency and gum disease, although scientific evidence supporting these uses is limited. Ascophyllum nodosum is also utilized in animal feed to enhance nutritional profiles, particularly in dairy cows, where it can improve milk iodine content and reduce methane emissions. While research on human health benefits is still emerging, in vitro studies suggest potential antioxidant and anticancer properties. However, more robust human trials are needed to validate these findings. The seaweed contains alginate, iodine, and various fatty acids, contributing to its potential health effects. Due to its iodine content, individuals with thyroid disorders should exercise caution when considering supplementation.

Benefits

In animal studies, Ascophyllum nodosum has demonstrated the ability to improve milk iodine content and reduce methane emissions in dairy cows. For humans, preliminary evidence suggests potential benefits in reducing dyslipidemia markers when used as part of brown seaweed extracts. In vitro studies have also highlighted potential antioxidant and anticancer properties, though these findings require confirmation through human trials. The benefits for individuals with iodine deficiency or dyslipidemia are potential, but more research is needed to establish clinical significance and optimal usage guidelines. Limited data exists on the effect sizes and time course of benefits in humans.

How it works

Ascophyllum nodosum's mechanism of action is primarily attributed to its iodine content, which is crucial for thyroid function. The seaweed also contains other bioactive compounds such as polyphenols and fatty acids that may contribute to its effects. It interacts with the body by influencing thyroid hormone production and potentially affecting lipid metabolism. However, the specific molecular targets and absorption and bioavailability of its components in humans are not extensively studied. Further research is needed to fully elucidate the mechanisms underlying its potential health benefits.

Side effects

Ascophyllum nodosum is generally considered safe for short-term use, but long-term safety and the potential for heavy metal accumulation are concerns. Common side effects are not well documented. Uncommon side effects may include alterations in thyroid function due to its iodine content. Rare side effects are not well documented. It may interact with thyroid medications and amiodarone. Due to a lack of safety data, it is contraindicated in pregnancy and breastfeeding. Individuals with thyroid disorders should exercise caution. Ensuring products are certified heavy metal-free is crucial to minimize risks.

Dosage

The minimum effective dose of Ascophyllum nodosum for human health benefits has not been established. Typically, it is used in amounts that provide adequate iodine without exceeding the recommended daily intake. The maximum safe dose is not well defined, and caution is advised due to the potential for heavy metal accumulation. There are no established timing considerations. It is often used as a powder or extract. Absorption factors are not well studied. No required cofactors have been identified. It is important to monitor iodine intake to avoid excessive consumption.

FAQs

Is Ascophyllum nodosum safe for everyone?

Caution is advised for individuals with thyroid conditions or those taking thyroid medications due to its iodine content. Pregnant and breastfeeding women should avoid it due to a lack of safety data.

How do I ensure the quality of Ascophyllum nodosum supplements?

Ensure products are certified heavy metal-free to minimize risks. Choose reputable brands that provide third-party testing for purity and potency.

What are the expected results from taking Ascophyllum nodosum?

Limited evidence supports human health benefits. More research is needed to determine its efficacy for specific conditions. It is primarily used for its iodine content.

Can Ascophyllum nodosum interact with medications?

Yes, it may interact with thyroid medications and amiodarone. Consult with a healthcare provider before use, especially if you are taking other medications.

Research Sources

https://www.mdpi.com/2624-862X/5/3/36 – A meta-analysis on dietary seaweed supplementation in dairy cows found that *Ascophyllum nodosum* can improve milk iodine content and reduce methane emissions. The study compared the effects of *Ascophyllum nodosum* with other seaweeds like *Asparagopsis taxiformis*, noting that the effects were less pronounced compared to the latter.
https://www.webmd.com/vitamins/ai/ingredientmono-1566/ascophyllum-nodosum – WebMD provides general information on *Ascophyllum nodosum*, including its uses for iodine deficiency and gum disease, while noting that evidence is limited. It also mentions potential side effects and interactions, emphasizing the need for caution.
https://www.mdpi.com/1660-3397/21/4/220 – A systematic review on brown seaweed extracts, including *Ascophyllum nodosum*, suggested potential benefits in reducing dyslipidemia markers in humans. The review analyzed multiple studies to assess the impact of brown seaweed extracts on lipid profiles, indicating a potential role in managing dyslipidemia.
https://pubmed.ncbi.nlm.nih.gov/39598320/ – This study highlights the antioxidant and anticancer properties of *Ascophyllum nodosum* extracts in vitro. The research suggests that compounds found in the seaweed may have potential therapeutic applications, but further human trials are needed to confirm these findings.
https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0249053 – This study investigates the effects of *Ascophyllum nodosum* on gene expression and immune responses in chickens. The research provides insights into the potential mechanisms by which *Ascophyllum nodosum* may influence immune function and overall health in poultry.

Score: 78/100