Many chocolate products contain toxic heavy metals: new study

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This is a bitter pill to swallow. Many cocoa products in the US contain concerning levels of toxic heavy metals, a new study from George Washington University warns. Many cocoa products in the US contain worrisome levels of lead and cadmium, a new study from George Washington University warns. Picture Partners – stock.adobe.com Researchers analyzed 72 cocoa-based foods — including dark chocolate, often praised as a heart-healthy treat — over eight years. They found that 43% of the products contained an amount of lead that tops recommendations, while 35% exceeded cadmium limits. Surprisingly, organic-labeled products had higher levels of lead and cadmium than non-organic products, the researchers said. Contamination can come from soil or occur during manufacturing. A single serving of these cocoa items may not pose significant health risks, but several servings might. Leigh Frame, director of integrative medicine at GW, led the testing of 72 cocoa-based products. The George Washingto...

35% of tattoo inks sold in US contaminated with bacteria: study



You may want to rethink getting ink.

About 35% of tattoo or permanent makeup inks sold in the US are contaminated with bacteria, according to new research published Tuesday.

The researchers tested 75 tattoo inks from 14 manufacturers for the presence of aerobic and anaerobic bacteria. The study authors say they are the first to investigate anaerobic bacteria — known to thrive in low-oxygen environments — in commercial tattoo inks. 

The researchers tested 75 tattoo inks from 14 manufacturers for the presence of aerobic and anaerobic bacteria. Microgen – stock.adobe.com

“Both types of bacteria, those needing oxygen (aerobic) and those not needing oxygen (anaerobic), can contaminate the inks,” said corresponding study author Seong-Jae (Peter) Kim, a microbiologist for the US Food and Drug Administration in Arkansas.

The FDA considers the inks used in tattoos — including permanent makeup — to be cosmetics, which do not need premarket approval like a drug or medical device does.

“FDA has not approved any inks for injection into your skin,” its website states.

The pigments used in the inks are color additives, which are subject to FDA approval, but the agency admits it has not historically regulated them. State and local jurisdictions, meanwhile, oversee tattooing practices.

The FDA considers the inks used in tattoos — including permanent makeup — to be cosmetics, which do not need premarket approval like a drug or medical device does. mikeosphoto – stock.adobe.com

The FDA notes that it has fielded reports of people getting infected from contaminated tattoo inks over the years and even issued a safety alert in 2019 after identifying six tattoo inks contaminated with bacteria.

Infections can lead to rashes or lesions, and in some cases, permanent scarring. 

Last year, the agency issued draft guidance to help tattoo ink manufacturers and distributors recognize potential contamination from bacteria, mold or other microorganisms.

Kim said his research showed “no clear link between a product label claiming sterility and the actual absence of bacterial contamination.”

“The rising popularity of tattooing in recent years has coincided with an increase in tattoo-related complications or adverse reactions,” he added.

A Pew Research Center survey last year found that 32% of US adults have a tattoo, including 22% who have more than one. LIGHTFIELD STUDIOS – stock.adobe.com

A Pew Research Center survey last year found that 32% of US adults have a tattoo, including 22% who have more than one.

Kim pointed out that bacterial infections are just one negative outcome of tattoos. Inflammatory reactions, allergic hypersensitivity and toxic responses are potential complications as well.

Kim said his research team plans to develop more efficient contamination detection methods for tattoo inks.

“In light of our study results, we want to emphasize the importance of continuously monitoring these products to ensure the microbial safety of tattoo inks,” he said.

His findings were reported in Applied and Environmental Microbiology, a journal of the American Society for Microbiology.

The study results follow research that found 83% of tattoo inks contain substances not on their label, like different pigments or unlisted additives. A separate study highlighted a potential link between tattoos and lymphoma, a type of blood cancer.



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