Bladderwrack is a type of seaweed that has a history of use as both a food and a medicine. It ranks among the heavily-hyped natural supplements purported to address an eclectic mix of conditions, though a lack of evidence exists to confirm them. Some benefits have been observed in populations who consume this seaweed as well as in laboratory studies, but the results have not firmly established their benefit in humans. Several safety concerns exist regarding the use of seaweed supplements. If you believe taking bladderwrack will address a particular health concern, talk to your doctor, who can offer guidance on choosing a quality supplement and other aspects of safe use.
Treating Hypothyroidism
Bladderwrack has a rich store of iodine, a nutrient necessary for your body to produce thyroid hormone. Using bladderwrack could help to stimulate thyroid function if your hypothyroidism results from an iodine-deficiency -- quite rare in the Western world, however. Using bladderwrack to treat hypothyroidism resulting from other causes could further damage your thyroid health. If you suspect you have low thyroid function, see your doctor for testing. Do not self-treat with bladderwrack or other seaweed supplements, as it is highly unlikely your problem is the result of iodine deficiency.
Hormonal Benefits
According to the Memorial Sloan-Kettering Cancer Center, populations that regularly consume bladderwrack appear to have lower levels of estrogen-related cancers. Potential mechanisms of action include reducing estrogen production in the body and the plant estrogens in bladderwrack attaching to estrogen receptor sites on the cells. This prevents the estrogen in the body from attaching and exerting its negative effects. It might also reduce menstrual symptoms.
Other Potential Benefits
The MSKCC reports laboratory studies showing bladderwrack exert actions that might lower cholesterol levels and blood pressure. It also notes topical applications might benefit the skin by improving elasticity.
MedlinePlus, an information service of the National Institutes of Health, notes "insufficient evidence" regarding the following suggested uses: constipation, cleansing the blood, digestive complaints, hardening of the arteries, arthritis and obesity.
Safety Considerations
Taking high amounts of iodine could increase your risk for thyroid-related disorders. Seaweed supplements also might contain dangerous agents like bacteria, neurotoxins and heavy metals, and the Beth Israel Deaconess Medical Center notes a case report of kidney failure resulting from bladderwrack supplements with high levels of heavy metals. MedlinePlus notes evidence suggesting bladderwrack supplements might interfere with your ability to get pregnant. Do not use it if you are pregnant or breastfeeding. If you suffer from liver or kidney disease, always clear the use of any supplement with your doctor. Taking bladderwrack could interfere with medications to treat hyperthyroidism and anticoagulant drugs like warfarin. High iodine consumption can also worsen acne and reduce iron absorption.
Member Comments