Why Don't Animals Get Schizophrenia (and How Come We Do)?
Research suggests an evolutionary link between the disorder and what makes us human
March 24, 2015 |By Bret Stetka


Though psychotic animals may exist, psychosis has never been observed outside of our own species; whereas depression, OCD, and anxiety traits have been reported in many non-human species.
Credit: IG_Royal/Thinkstock

Many of us have known a dog on Prozac. We've also witnessed the eye rolls that come with canine psychiatry. Doting pet owners—myself included—ascribe all sorts of questionable psychological ills to our pawed companions. But the science does suggest that numerous non-human species suffer from psychiatric symptoms. Birds obsess; horses on occasion get pathologically compulsive; dolphins and whales—especially those in captivity—self-mutilate. And that thing when your dog woefully watches you pull out of the driveway from the window—that might be DSM-certified separation anxiety. "Every animal with a mind has the capacity to lose hold of it from time to time" wrote science historian and author Dr. Laurel Braitman in "Animal Madness."

But there’s at least one mental malady that, while common in humans, seems to have spared all other animals: schizophrenia. Though psychotic animals may exist, psychosis has never been observed outside of our own species; whereas depression, OCD, and anxiety traits have been reported in ...

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Widely Used Herbicide Linked to Cancer
The World Health Organization's research arm declares glyphosate a probable carcinogen. What's the evidence?
March 25, 2015 |By Daniel Cressey and Nature magazine


Glyphosate is the world’s most widely produced herbicide, by volume. It is used extensively in agriculture and is also found in garden products in many countries.
Credit: Chafer Machinery via Flickr

The cancer-research arm of the World Health Organization last week announced that glyphosate, the world’s most widely used herbicide, is probably carcinogenic to humans. But the assessment, by the International Agency for Research on Cancer (IARC) in Lyon, France, has been followed by an immediate backlash from industry groups.

On March 23, Robb Fraley, chief technology officer at the agrochemical company Monsanto in St Louis, Missouri, which sells much of the world’s glyphosate, accused the IARC of “cherry picking” data. “We are outraged with this assessment,” he said in a statement. Nature explains the controversy.

What does the IARC report say?
The IARC regularly reviews the carcinogenicity of industrial chemicals, foodstuffs and even jobs. On March 20, a panel of international experts convened by the agency reported the findings of a review of five agricultural chemicals in a class known as organophosphates. A summary of the study was published in The Lancet Oncology.

Two of the pesticides — tetrachlorvinphos and parathion — were rated as ...

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