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Trouble for psychedelic toads

August 22, 2025 By EarthWise Leave a Comment

Back in the 1960s, it was discovered that secretions from toads native to the Sonoran Desert have psychedelic properties.  The information did not have much impact for over 40 years but about ten years ago, the story started having widespread exposure in U.S. media outlets and there was increasing publicity for the fact that the toad’s dried secretions could be smoked to produce a brief but intense high.

There was also a false narrative spreading around that this so-called toad medicine was part of an ancient practice of indigenous tribes in the Sonoran Desert.  The active agent in the toad secretion is a compound called 5-MeO-DMT and it became an increasingly popular item being sold by self-described shamans, new-age healers, and other underground practitioners. 

5-MeO-DMT is mostly banned as a controlled substance in the U.S., but many Mexican ranchers have been amassing the toads to sell to foreigners to take back home.  Despite the fact that 5-MeO-DMT has been successfully synthesized, the mystique surrounding the toads makes potential users want to use the natural version.

Researchers have found that trapping the toads in Mexico has decimated several populations of the amphibians and has sent others into steep decline. The species currently has no protections in Mexico.  These desert toads play key roles as both predators and prey and as their population declines, there are likely to be some serious ecological problems.  There is already anecdotal evidence that in many places in the desert, crop-eating insect populations have surged in recent years.

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These Toads Have Psychedelic Powers, but They’d Prefer to Keep It Quiet

Photo, posted December 12, 2017, courtesy of K.S. Black via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Dark chocolate is not so dangerous

July 15, 2024 By EarthWise Leave a Comment

dark chocolate does not seem so dangerous after all

Last year, Consumer Reports published a story stating that a third of chocolate products contain potentially dangerous amounts of heavy metals, in particular lead and cadmium. Since it contains much more cacao, dark chocolate was singled out as the most worrisome product.  Needless to say, chocolate lovers found this report quite alarming.

A new study by Tulane University published in Food Research International employed a larger sample size, expanded the scope of testing to 16 metals, and included a risk assessment of toxic metals as well as accounted for the nutritional contribution of essential minerals.

The conclusions of the study were that dark chocolate poses no adverse risk for adults and contains nutritionally beneficial levels of essential minerals.  Some risks remain for very young children, but only from a very small number of chocolate products and only when large quantities are consumed.

The study sampled 155 dark and milk chocolates from various global brands sold in the United States.  It modeled the risk of eating one ounce of the chocolate per day or two large whole bars a week.

Only one brand exceeded the international limit for cadmium; four had cadmium levels that could pose a risk for a child weighing less than 33 pounds.  Only two bars contained lead levels above California interim standard, but neither posed adverse risks for anyone.

Lead in chocolate comes from post-harvest processing; cadmium comes from the soil.  South American chocolates generally have higher levels of metals than chocolates from Asia and West Africa.  Most dark chocolate in the U.S. is sourced from West Africa.

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A dark side to dark chocolate? New study finds very minimal risk for kids from metals in chocolates

Photo, posted February 19, 2012, courtesy of Bodo via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Electricity From A Bionic Mushroom

December 28, 2018 By EarthWise Leave a Comment

https://earthwiseradio.org/wp-content/uploads/2018/12/EW-12-28-18-Electricity-from-a-Bionic-Mushroom.mp3

In an engineering feat straight out of a weird science-fiction story, researchers at Stevens Institute of Technology in New Jersey have taken an ordinary white button mushroom and used 3D printing technology to coat it with graphene microribbons and cyanobacteria to produce a device that generates electricity.

[Read more…] about Electricity From A Bionic Mushroom

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