Nori is a high-protein plant source of vitamin B-12

Sunday, March 04, 2012 by: Donna Earnest Pravel
Tags: nori, vitamin B-12, iodine

eTrust Pro Certified

Most Viewed Articles
Popular on Facebook
CDC issues flu vaccine apology: this year's vaccine doesn't work!
The five biggest lies about Ebola being pushed by government and mass media
Ultraviolet light robot kills Ebola in two minutes; why doesn't every hospital have one of these?
Tetanus vaccines found spiked with sterilization chemical to carry out race-based genocide against Africans
Healthy 12-year-old girl dies shortly after receiving HPV vaccine
The best way to help your body protect itself against Ebola (or any virus or bacteria)
Cannabis dissolves cancerous tumor in young infant, deemed a 'miracle baby' by physician
Ben & Jerry's switches to non-GMO, Fair Trade ice cream ingredients
Russia throws down the gauntlet: energy supply to Europe cut off; petrodollar abandoned as currency war escalates
W.H.O. contradicts CDC, admits Ebola can spread via coughing, sneezing and by touching contaminated surfaces
Monsanto's seed imperialism halted in Canada thanks to massive protests
Top ten things you need to do NOW to protect yourself from an uncontrolled Ebola outbreak
FDA targets Dr. Bronner's Magic Soaps for sharing health benefits of coconut oil
Why flu shots are the greatest medical fraud in history
Governments seize colloidal silver being used to treat Ebola patients, says advocate
Flu vaccine kills 13 in Italy; death toll rises
The 21 curious questions we're never allowed to ask about vaccines
CDC admits it has been lying all along about Ebola transmission; "indirect" spread now acknowledged

(NaturalNews) Nori, also known as purple laver or Porphyra yezoensis, may be the most popular seaweed in the United States. Nori is the seaweed most widely used as a wrap for sushi. It is usually sold in large, thin, dried sheets. Traditional Asian cultures have known for centuries of the extremely high mineral content - especially iodine -in all seaweeds. Iodine is essential for proper thyroid function.

Nori has more protein per weight than either sunflower seeds or wheat germ. Just 100 grams, or roughly one cup of nori contains 41.4 grams of protein. In addition, the seaweed is rich in vitamins A, C and B-12. The high vitamin B-12 content in nori makes this sea vegetable a favorite among vegetarians.

A lower iodine content compared to other seaweeds makes nori safe for long-term use

In 1999, the Journal of Agricultural and Food Chemistry published a clinical study to determine the amount of bio-available vitamin B-12 in dried nori. While the scientists measured sizable amounts of vitamin B-12, they also noted that nori contains less iodine than other forms of sea vegetables, such as kelp. The scientists remarked that even an excessive intake of nori would not create an overdose of iodine. This makes nori an excellent candidate for long-term consumption of plant-based iodine. They also believed that nori was the best source of vitamin B-12 among seaweeds for vegans.

Does it matter whether nori is raw or dried?

The International Journal for Vitamin and Nutrition Research confirmed in another 1999 clinical study that nori is an excellent source of natural B-12. However, the study went on to remark that dried nori actually had a negative effect on vegetarian children. The researchers were curious to see why dried and raw nori had such different results. They discovered that when nori was dried, the chemical composition changed from genuine B-12 to a harmful analogue -- something similar to B-12 that actually caused the B-12 levels in children to drop. Vegan parents may want to exercise caution and find a different source of Vitamin B-12 for their children.

After the 1999 study was published, a team of scientists from the Laboratory of Nutrition and Food Science at Hagoromo-gakuen College in Japan decided to confirm the findings concerning dried nori and B-12 loss. Vitamin B-12 deficient rats were fed dried nori which contained five different forms of vitamin B-12. Interestingly, when these rats were measured for vitamin B-12 deficiency in their urine, there was none at all. In addition, the amount of vitamin B-12 in the rat's bloodstream significantly increased. The researchers concluded that the vitamin B-12 contained in dried nori is definitely bio-available to rats.

Sources for this article include:, "Bio-availability of dried asakusanori (porphyra tenera) as a source of Cobalamin (Vitamin B-12). K. Yamada, et al. International Journal of Vitamin and Nutrition Research, November 1999; 69(6): 412-8., "Feeding dried purple laver (nori) to vitamin B 12-deficient rats significantly improves vitamin B 12 status." S. Takenaka, et al. British Journal of Nutrition, June 2001; 85(6): 699-703., "Dried green and purple lavers (Nori) contain substantial amounts of biologically active vitamin B(12) but less of dietary iodine relative to other edible seaweeds." F. Watanabe, et al. Journal of Agricultural and Food Chemistry June 1999; 47(6): 2341-3.

FAO Document, "Seaweeds Used as Human Food," by Fisheries and Aquaculture Department

About the author:
This article is provided courtesy of Donna Earnest Pravel, owner and senior copy editor of Heart of Texas Copywriting Get free weekly tips on natural healing and herbs by visiting her blog, Bluebonnet Natural Healing Therapy.

Join over four million monthly readers. Your privacy is protected. Unsubscribe at any time.
comments powered by Disqus
Take Action: Support by linking back to this article from your website

Permalink to this article:

Embed article link: (copy HTML code below):

Reprinting this article:
Non-commercial use OK, cite with clickable link.

Follow Natural News on Facebook, Twitter, Google Plus, and Pinterest

Colloidal Silver

Advertise with NaturalNews...

Support NaturalNews Sponsors:

Advertise with NaturalNews...


Sign up for the FREE Natural News Email Newsletter

Receive breaking news on GMOs, vaccines, fluoride, radiation protection, natural cures, food safety alerts and interviews with the world's top experts on natural health and more.

Join over 7 million monthly readers of, the internet's No. 1 natural health news site. (Source:

Your email address *

Please enter the code you see above*

No Thanks

Already have it and love it!

Natural News supports and helps fund these organizations:

* Required. Once you click submit, we will send you an email asking you to confirm your free registration. Your privacy is assured and your information is kept confidential. You may unsubscribe at anytime.