Seaweed – from ancient use to modern nutritional supplement

Seaweed has been used as a vegetable in Japan since ancient times, a custom that is much less known in Europe. In sushi, strips of seaweed are used as decoration and as a binding material to hold the various rice and fish ingredients together. Some seaweed is not broken down by the body and can be seen as dietary fiber.

Seaweeds and blue-green algae

Seaweeds are not actually considered plants, nor are they considered animals. Seaweeds are special organisms that occur among green algae, red algae and brown algae. Blue-green algae, or blue-green algae, use photosynthesis just like plants. Their official name is cyanobacteria, derived from the color cyan (blue-green). Blue-green algae live in fresh and salt water. Furthermore, they live in the ground, on rocks and branches, leaves and tree trunks.


Minerals are important components for health. Without the help of minerals, vitamins, for example, cannot function in our body. Minerals (iron) transport oxygen through our body. They play an important role in the growth of our body and the maintenance and repair of tissues. Minerals play a role in muscle contraction. They have a function in the functioning of the nerves and in energy management.

Iodine and other substances

Seaweed is important because of its rich content of minerals such as iodine. Iodine helps against growth and development disorders. Seaweed also contains calcium for bone strengthening and trace elements. Examples of trace elements in humans include zinc, copper, selenium, cobalt and iodine. Seaweed also contains vitamins C and E and protein.

Seaweed and fat burning

New studies at Hokkaido University indicate that brown seaweed (Undaria) is highly synergistic and results in a broad and thermogenic effect that effectively contributes to weight management. In Oriental medicine, seaweed is used to purify the blood, strengthen the intestines, improve skin and hair and regulate menstruation.

Radioactive isotopes

Seaweed helps to remove radioactive isotopes from the body. Using this seaweed at least several times a week as a condiment as well as as a vegetable (so you get about half a cup of it) is necessary for chelation to take place.

Use – Spirulina tablets

Some blue-green algae are used in cosmetics such as pills and facial masks. They are also used in foodstuffs as a stabilizer, seasoning or protein supplier. The blue-green algae spirulina is available in tablet form and is said to promote health, as does aphanizomenon. Animal experiments have shown that the pigment phycocyanin can have an anti-inflammatory effect.

Where do blue-green algae and seaweeds live?

Blue-green algae and seaweeds live not only in fresh and salt water but also in the soil, on rocks, branches and tree trunks. In the tropics they live on plant leaves. Some species can tolerate very high temperatures and live in hot springs. There are also species that live in symbiosis with a certain plant, such as blue seaweed. There are species that live closely with lichens. Marine algae are attached to the bottom and grow along the coast.

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