Share ConsumerLab.com's information with family and friends — or just send to yourself. Simply provide an email address below.
You must provide a valid email address.
Your email address*:
Your name*: Send me a copy
Email Address where it's going*:
*Addresses and name will only be used for sending this message.
Additional message (optional):
Your message has been sent. Thanks for sharing!
Question: I recently read that a gluten-free diet may increase your exposure to arsenic and mercury. Is this true?
Answer: It is true that a study found that people who reported to be on gluten-free diets had levels of arsenic in their urine that averaged about 50% to 90% more than found in people not eating gluten-free diets. The study (based on the U.S. population from 2009 to 2014) also found 70% more mercury in the blood of gluten-free eaters.
However, a careful review of this study by ConsumerLab.com indicates that the amounts of arsenic and mercury found do not pose a health risk and, furthermore, the primary source of these compounds is quite possibly not gluten-free foods.See the full answer for the details >>
(If you are on a gluten-free diet, be aware that oats are naturally gluten-free, but that some oat cereals contain significant amounts of gluten due to cross-contamination during processing. See ConsumerLab.com's Oat Cereals Review for results by product -- none of which, by the way, were found to be contaminated with heavy metals such as arsenic.)
Also see ConsumerLab.com's answers to these questions: