Seaweed has long been a staple in many coastal cuisines, but recently it has gained attention in the wellness world for its impressive nutrient profile. From sushi rolls to dried seaweed snacks and soups, this ocean vegetable is packed with minerals that can support several important functions in the body. Some doctors say adding small amounts of seaweed to your diet consistently—even for just a couple of weeks—may provide noticeable health benefits.
According to naturopathic doctor Dr. Janine Bowring, seaweed contains a variety of nutrients that support everything from thyroid health to immunity. “These are an excellent source of iodine,” she explains, noting that iodine plays a crucial role in proper thyroid function. If you’re curious about what happens when you regularly include seaweed in your meals, here are some potential benefits experts say you might experience.
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Better Thyroid Function
One of seaweed’s most well-known benefits is its iodine content. Iodine is an essential mineral that helps the thyroid produce hormones responsible for regulating metabolism, energy levels, and body temperature.
Dr. Bowring highlights that seaweed—especially varieties like kelp—can naturally support thyroid health because of its iodine levels. Without adequate iodine, the thyroid can struggle to produce the hormones the body needs to function properly.
For people who don’t consume many iodine-rich foods, adding small amounts of seaweed to their diet may help support healthy thyroid hormone production.
Stronger Bones and Teeth
Seaweed also contains a range of minerals that support bone health. According to Dr. Bowring, it provides nutrients like copper, calcium, magnesium, and manganese—all of which play roles in maintaining strong bones and teeth.
Calcium and magnesium are particularly important for bone density, while trace minerals such as manganese help support bone formation and connective tissue health. Over time, incorporating nutrient-dense foods like seaweed can help contribute to overall skeletal strength.
Healthier Skin and Collagen Support
Seaweed contains vitamin C and vitamin B2, both of which are essential for healthy skin and overall cellular function. Vitamin C is especially important because it helps the body produce collagen—the protein that keeps skin firm and resilient.
Collagen production naturally declines with age, so consuming foods rich in vitamin C may help support the body’s natural ability to maintain healthy skin structure.
Reduced Inflammation
Another reason seaweed is gaining popularity in nutrition circles is its anti-inflammatory properties. Dr. Bowring notes that kelp and other sea vegetables contain natural compounds that may help reduce inflammation in the body.
Chronic inflammation has been linked to a variety of long-term health concerns, so foods rich in anti-inflammatory nutrients and antioxidants can play an important role in maintaining overall wellness.
Stronger Immune Support
In addition to supporting thyroid and bone health, seaweed also provides antioxidants that help protect cells from oxidative stress. These compounds, along with vitamin C and other micronutrients, can contribute to a stronger immune system. Because seaweed contains a combination of vitamins, minerals, and antioxidants, even small servings can help add nutritional variety to your diet.
The Bottom Line
Seaweed may be small, but it’s packed with nutrients that support multiple systems in the body. According to experts like Dr. Jeanine Bowring, regularly eating seaweed for a couple of weeks could help promote better thyroid function, stronger bones, improved collagen production, and immune support thanks to its rich supply of iodine, minerals, and antioxidants.
As with any food, moderation is key—especially since seaweed can be high in iodine. But when enjoyed as part of a balanced diet, this ocean superfood can be a simple and flavorful way to boost your overall health.
