Case Report: Potential Arsenic Toxicosis Secondary to Herbal Kelp Supplement
2007

Arsenic Poisoning from Herbal Kelp Supplements

Sample size: 9 publication 10 minutes Evidence: moderate

Author Information

Author(s): Eric Amster, Asheesh Tiwary, Marc B. Schenker

Primary Institution: University of California, Davis

Hypothesis

Can herbal kelp supplements cause arsenic toxicosis?

Conclusion

The study found that eight out of nine commercially available kelp supplements contained detectable levels of arsenic, which can lead to serious health issues.

Supporting Evidence

  • Eight of the nine kelp samples tested contained arsenic levels above FDA tolerance.
  • The patient experienced severe symptoms that resolved after stopping the kelp supplements.
  • Urine arsenic levels decreased significantly after discontinuation of the supplements.

Takeaway

Some kelp supplements can have dangerous levels of arsenic, which can make people very sick. Stopping these supplements can help them feel better.

Methodology

Analyzed nine samples of kelp supplements for arsenic content using inductively coupled argon plasma spectrometry.

Limitations

The estimated dose of exposure was based on limited analyses, making it approximate.

Participant Demographics

One 54-year-old woman with a history of health issues.

Digital Object Identifier (DOI)

10.1289/ehp.9495

Want to read the original?

Access the complete publication on the publisher's website

View Original Publication