Reliable
and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary studies
suggesting a health benefit or minimal health benefit. For an herb, supported by traditional use but minimal
or no scientific evidence. For a supplement, little scientific support and/or minimal health
benefit.
Who is likely to be deficient?
Chitosan is not an essential nutrient, so deficiencies do not occur.
How much is usually taken?
Most human research has used 3–6 grams per day with meals.
Are there any side effects or interactions?
While no long-term studies of the effects of chitosan on human health have been done,
animal studies suggest that this compound could inhibit the absorption of minerals and fat-soluble vitamins. Adverse effects on the growth of children
and on the outcome of pregnancy are also
possible.1 In addition, although chitosan-included alterations in intestinal flora
are believed to be beneficial, the possibility that these changes may have negative long-term
consequences has not been ruled out. People with
intestinal malabsorption syndromes should not use chitosan.
At the time of writing, there were no well-known drug interactions
with chitosan.
References (To view, roll mouse over the "References" heading; to hide, click on the heading)
1. Koide SS. Chitin-chitosan: properties, benefits and risks. Nutr
Res 1998;18:1091–101 [review].
The information presented in Healthnotes is for informational purposes
only. It is based on scientific studies (human, animal, or in vitro), clinical
experience, or traditional usage as cited in each article. The results reported may not
necessarily occur in all individuals. For many of the conditions discussed, treatment with
prescription or over the counter medication is also available. Consult your doctor,
practitioner, and/or pharmacist for any health problem and before using any supplements or
before making any changes in prescribed medications. Information expires June 2009.
Reliable
and relatively consistent scientific data showing a substantial health benefit.
