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Can eating laver every day have any harm?
No. Benefits of eating laver: laver is a healthy food, pregnant women can eat laver, and eating laver by pregnant women is also good for their health.

Porphyra contains protein, fat, carotene, vitamins B 1, B2, B 12, C, nicotinic acid, choline, amino acids (alanine, glutamic acid, aspartic acid, etc.), iodine, calcium, phosphorus, iron and other components, which are very nutritious and helpful to enhance memory, treat anemia of women and children, and promote bones. Moreover, laver contains a certain amount of mannitol, which can be used as an auxiliary food to treat edema of pregnant women.

Extended data:

Porphyra haitanensis (Porphyra haitanensis? T.J.chang et B.F.Zheng), Porphyra yezoensis (P.yezoensis Sueda), and Porphyra tongensis (P. suborbiculata? Kjellm.), Porphyra yezoensis (P. tenera? Kjellm.) and other wild lavers. The algae body is purple, generally12-30 cm high.

The cultured Porphyra haitanensis is mainly distributed in the coastal areas of Zhejiang and Fujian. The cultured Porphyra yezoensis has a small distribution range, mainly in Nantong and Lianyungang cities along the coast of Jiangsu Province.

Edible population of phyllodes in Porphyra. Porphyra is rich in nutrition, its protein content exceeds that of kelp, and it contains more carotene and riboflavin.

Every 100g of dried laver contains protein 24-28g, fat 0.9g, carbohydrate 31-50g, calcium 330mg, phosphorus 440mg, iron 32mg, carotene1.23mg, riboflavin 2.07mg and niacin 5./kloc-0. Leucine 2.6g and isoleucine 1.4g have the highest contents of protein, iron, phosphorus, calcium, riboflavin and carotene in all kinds of vegetables, so laver is also known as "nutritional treasure house".

(1) protein and amino acids? The bioactive substances of laver are very important for plant life activities. Generally, the protein content of edible laver is 24%-28%, which is much higher than that of ordinary vegetables, and there are many amino acids necessary for human body. Porphyra protein contains many neutral and acidic amino acids, such as alanine, aspartic acid, glutamic acid, glycine, proline and so on, which is a feature that all terrestrial vegetable plants do not have.

(2) Compared with terrestrial plants, the fat content of laver is lower, mostly below 1%, and the palmitic acid of saturated fatty acids accounts for the vast majority, about 20%; The content of onion acid and stearic acid in the bean is less, accounting for 2% respectively; Unsaturated fats-linoleic acid, linolenic acid or octadecatetraenoic acid, which have a good health care effect on human body, contain more, ranging from10% to 30%, and highly unsaturated fatty acids above C20 also contain a certain amount.

Even better, the content of eicosapentaenoic acid in laver, which is compared to "brain gold", is as high as 30%.

(3) Vitamins Porphyra contains a variety of vitamins, and the content of B vitamins is not inferior to that of vegetables. The content of B vitamins in laver, especially vitamin B 12, which hardly exists in terrestrial plants, is very high. In terms of dry matter, the content of vitamin B 12 is similar to that of fish, and the content of vitamin C is also very high. Vitamin B 12 can activate brain nerves, prevent aging and memory decline, and improve depression.

(4) Inorganic: Seawater contains extremely rich inorganic components, and laver has the function of absorbing and accumulating inorganic substances in seawater, because the inorganic substances in some lavers are extremely rich.

References:

Baidu encyclopedia: laver