Bladderwrack

Traditional medicinal practices have used it for centuries to treat an array of conditions, such as iodine deficiency, obesity, joint pain, aging skin, digestive issues, urinary tract infection, and thyroid dysfunction, including hyperthyroidism, hypothyroidism, and goiter development.

Rich in vitamins, minerals, and antioxidants.

Bladderwrack nutrition

For centuries, many cultures have consumed seaweed as part of their regular diet due to its impressive nutrient profile.

Bladderwrack is a type of seaweed that’s rich in vitamins and minerals, such as calcium, iodine, magnesium, potassium, sodium, zinc, and vitamins A and C.

It’s also high in phytochemicals. These health-promoting plant compounds, which include phlorotannins and fucoxanthin, may help lower oxidative stress — an imbalance between free radical and antioxidant levels in your body.

Bladderwrack is high in fiber, which can support a healthy gut. In particular, it’s high in alginic acid and fucoidans, which have both been shown to have health-promoting properties.

Most bladderwrack research involves its effects on thyroid and skin health, as well as its anti-inflammatory properties.

Thyroid function

Bladderwrack contains high levels of iodine, a trace element that supports thyroid health by producing the thyroid hormones triiodothyronine (T3) and thyroxine (T4). These hormones help regulate your metabolism and support proper growth and neurological development.

Iodine deficiency can lead to low T3 and T4 levels and may ultimately cause health complications, such as a goiter and hypothyroidism — a condition characterized by symptoms like weight gain, fatigue, dry skin, and increased sensitivity to the cold.

Though it’s common in developing countries, hypothyroidism from iodine deficiency is rare in the United States and other industrialized nations. Rather, hypothyroidism is mostly related to an autoimmune disease known as Hashimoto’s thyroiditis.

Despite being a good dietary source of iodine — a mineral that can support thyroid health — taking bladderwrack supplements or eating large amounts of it may provide excessive amounts of iodine.

Most healthy individuals can safely tolerate excess iodine. However, those with thyroid disorders, such as hyperthyroidism or hypothyroidism, should exert caution, as it can lead to worsened symptoms, especially if iodine deficiency was not the root cause of the disorder.