Hypothyroidism is the medical term for an under-active thyroid. The thyroid is a gland found at the base of neck that produces hormones that help to regulate metabolism. If your thyroid is under-active, it means that your thyroid gland is not producing enough thyroid hormone. As a result, you may feel tired and cold and you may gain weight and suffer from headaches. If you suffer from hypothyroidism, your doctor will likely prescribe drugs to help boost the production of thyroid hormone. Herbs such as bladderwrack may also have this effect. Get medical advice before taking it and only use it under medical supervision.
Properties
Bladderwrack, sometimes known as sea kelp, is a seaweed commonly found on the coasts of the Atlantic and Pacific oceans. It is rich in the mineral iodine, a deficiency of which is sometimes linked with hypothyroidism. It is also sometimes used to treat cellulite, fatigue and as a weight loss aid. The University of Maryland Medical Center suggests taking 600 mg one to three times daily to boost an under-active thyroid, but adds that you should not use it unless directed to do so by your doctor.
Efficacy
Studies examining the role of bladderwrack in the treatment of hypothyroidism are limited and most are dated. In addition, RxList notes that there is insufficient evidence that bladderwrack can treat thyroid disorders. However, an article by S. Shilo and H.J. Hirsch published in the July 1986 issue of the "Postgraduate Medical Journal," notes that this herb raised normal thyroid function in a 72 year old female who took an over-the-counter bladderwrack supplement.
Safety Considerations
RxList notes that bladderwrack is likely unsafe. This is because it contains variable amounts of iodine, large quantities of which may cause serious health problems, including thyroid cancer. It may also contain toxic heavy metals and a substance known as algin, which acts a laxative. Do not use bladderwrack if you are pregnant or breastfeeding or if you are allergic to iodine. Do not use it to treat a thyroid disorder except under medical supervision. It may also interact with other drugs you may be taking, including anticoagulants.
Other Herbal Options
Other herbs that may help to boost an under-active thyroid include guggul and forskolin, according to UMMC. However, like bladderwrack, there is little scientific evidence to support their use as treatments for hypothyroidism. Get medical advice before using any of these herbs. Like bladderwrack, they may cause side effects or be unsuitable for you. For example, forskolin may lower your blood pressure and is not suitable for people who have a heart condition or a bleeding disorder.
