ElliotB wrote: Here is a link for information about Spirulina
http://www.livescience.com/48853-spirul ... facts.html
People with certain autoimmune conditions should avoid Spirulina supplements, according to the NIH. Since Spirulina enhances the immune system, Spirulina supplements may worsen symptoms of multiple sclerosis (MS), lupus (systemic lupus erythematosus, SLE), rheumatoid arthritis and other conditions linked to overactive immune systems.
...many vegans supplement their diets with spirulina (an algae), tempeh (fermented soy), or nori (a seaweed) in the belief that these plant foods contain vitamin B12 – a widely accepted idea based on laboratory tests that show significant amounts of the vitamin in these plants. Newer research, however, shows that the tests are primarily detecting "pseudo-vitamin B12" analogues that may actually block the uptake of real B12.
In fact, one at-risk group largely overlooked by doctors consists of health-conscious vegans, vegetarians, and followers of macrobiotic diets. Many of these people fail to take the proper amount of supplemental B12; a number of others take spirulina or tempeh, supplements that are touted as being high in B12 but actually contain B12 analogues that block the absorption of cobalamin [B12] and cause falsely normal serum B12 levels on testing.
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