Traditional Chinese medicine believes that kelp is slightly cold and non-toxic in nature, and has the effects of softening and firming, dissipating phlegm and asthma, promoting water and swelling, removing fat and lowering blood pressure.

In the 1980s, Japanese scholars conducted food surveys among residents in Okinawa, Japan's region with the longest average life expectancy and the highest percentage of centenarians. The results show that the residents in this county eat more potatoes, beans and vegetables, and the special place is that they eat most kelp and other seaweed food. This may be an important factor in the longevity of Okinawa residents.

In the Qin Shihuang era, there was no natural kelp growing area in China, and people did not know what kelp was, let alone its health care effect on the human body. As early as 221 BC, after Qin Shihuang unified the six countries, he sent Xu Fu to lead thousands of virgin boys and girls to the East China Sea to find the elixir of life. Later, it was also said that the medicine Qin Shihuang asked for was kelp.

Modern medical research has proved that kelp contains many nutrients and medicinal ingredients that are beneficial to human health. Eating kelp can reduce blood sugar, blood lipid and cholesterol, which can be effectively prevented Arteriosclerosis 、 constipation 、 cancer , Senile dementia And resistance to aging. Therefore, the Japanese call kelp "longevity dish".