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Seaweed: a staple -

Seaweed is a staple of many cultures in the East. However, it's largely been forgotten in the West until recently, when it showed promise as a superfood.

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Seaweed: a staple -

In coastal parts of Asia, seaweed is widely consumed, and those who enjoy Japanese food will recognize a seaweed salad or the dried nori that's used to wrap sushi rolls.

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Japanese study -

Large population studies in Japan have shown daily seaweed consumption is linked to better health outcomes, including a lower risk of stroke in men, compared to people who didn't eat any.

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Japanese study -

The same studies also showed that there was a lower rate of heart disease among those who consumed the superfood daily, compared to those who didn't.

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Highly absorbable -

There are some potential risks with seaweed, however. Depending on the species, it can contain arsenic and other heavy metals, as it is a highly absorbing plant.

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Arsenic levels -

The levels of arsenic in seaweed vary, depending on the water the seaweed is growing in. Seaweed sold for human consumption should always be tested first by producers, and it should only be eaten in moderation.

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Sustainability -

Seaweed is a sustainable food source that requires no arable land, freshwater, or fertilizers to grow. This makes it environmentally friendly.

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Plant protein -

It is a good source of protein, particularly for individuals following plant-based diets. Our bodies need protein to repair cells and make new ones.

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Plant-based B12 -

Some minerals that are difficult to obtain from a plant-based diet have been shown to be contained in seaweed, for example B12, although the amount varies depending on the type of seaweed.

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Vitamin D -

According to one study, a 5-gram portion of edible seaweed contains anywhere from 400% to 600% of the recommended dietary intake for vitamin D, depending on the type of seaweed.

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Vitamin D -

Kelp is the only rich vegetable source of vitamin D. For those following a plant-based lifestyle, seaweed could help to support nutritional needs.

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Versatility -

Seaweed is a versatile ingredient that can be used in a variety of dishes, adding depth of flavor and nutritional benefits.

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Bioactive compounds -

The bioactive compounds in seaweed, such as phlorotannins, have antioxidant properties that can help protect cells from damage caused by free radicals.

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Lignans -

Seaweed contains lignans, which have been linked to a reduced risk of certain cancers, including breast and prostate cancer.

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Heart health -

Seaweed is a great source of soluble fiber. This fiber can help lower cholesterol levels and reduce the risk of heart disease.

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Heart health -

The high levels of magnesium contained in seaweed can help regulate blood pressure and support cardiovascular health further.

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Calcium for bones -

Seaweed has a high calcium content, that can support bone health. This could help prevent conditions such as osteoporosis.

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Nutritional benefits -

Seaweed is a low-calorie, nutrient-dense food, which makes it a great option for those looking to maintain a healthy weight.

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Vitamin content -

Seaweed is rich in a number of vitamins: A, C, E, and K, which help to support overall immune function in the body and promote healthy skin.

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A source of iron -

Seaweed is a rich source of iron. This makes it beneficial for individuals with anemia or those at risk of iron deficiency.

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Folate -

Seaweed is a natural source of folate. Folate is important for pregnant women, as it supports fetal development and helps prevent neural tube defects.

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Iodine effects and precautions -

Seaweed is an excellent source of iodine, which people can be slightly deficient in. It's essential for thyroid function and metabolism regulation. However, it shouldn't be consumed by those with hyperthyroiditis.

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Thyroid function -

Iodine deficiency can cause goiters and other thyroid function disorders. Iodine helps the thyroid to make the hormone thyroxine, which controls how many of the cells in the body work.

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Metabolism boosting -

Seaweed contains fucoxanthin, a compound that is thought to perhaps aid in weight management by increasing the body's metabolic rate.

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Gut health -

It also contains a unique blend of polysaccharides, which have prebiotic properties. They support gut health by promoting the growth of beneficial gut bacteria.

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Sea moss -

Capturing the superfood trend with seaweed is sea moss—a catchall term to describe various species of algae growing in coastal waters. It has grown a huge following online thanks to a TikTok trend.

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Irish sea moss -

Even though it's been used for years, by athletes and as a herbal remedy, Irish sea moss is experiencing a renaissance as a source of hard-to-get minerals, that comes in the form of gels, lotions, pills, powders, and gummies.

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Spa treatments -

Eating seaweed isn't the only way to obtain its superfood benefits; it's also a popular spa treatment, particularly for its alleged full-body "firming" and detoxing effects.

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Spa treatments -

It's said to aid in skin elasticity, tone, and texture. The antioxidants are said to help plump skin and smooth fine lines. Perhaps it's a better option if you can't quite stomach eating it!

Sources: (BBC Future) (Healthline) (The Guardian) (Dazed) (Delish) (CNN)

See also: Is seaweed the solution to net zero aviation emissions?

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