A parasite that causes rats to sacrifice themselves to cats may also change human behavior, making women more outgoing and warmhearted, and men more jealous and suspicious. The Toxoplasma
protist is shed in cat feces, which are eaten by rats; infected rats become fearless in the presence of cats, which makes them easier to catch, which, in turn spreads the disease to new cats.
Carl Zimmer is the author of Parasite Rex, a sharp science book dealing with the amazing ways that parasites attack us, change us, farm us, use us and kill us. He reports on new research on the effect of Toxoplasma bacteria on humans.
Toxoplasma was previously believed to be largely harmless to humans (though it can compromise our immune systems). But new research suggests that humans, like rats, go through behavioral changes when infected with the parasite, though the effects are opposite in women and men.
Regular BB readers will remember my review of Scott Westerfeld's Peeps, a young-adult vampire novel largely inspired by Parasite Rex, in which all of the behaviors attributed to vampires are explained in parasitological terms.
Some scientists believe that Toxoplasma changes the personality of its human hosts, bringing different shifts to men and women. Parasitologist Jaroslav Flegr of Charles University in Prague administered psychological questionnaires to people infected with Toxoplasma and controls. Those infected, he found, show a small, but statistically significant, tendency to be more self-reproaching and insecure. Paradoxically, infected women, on average, tend to be more outgoing and warmhearted than controls, while infected men tend to be more jealous and suspicious.
I’ve mentioned it online before, but here we go: Two years ago, my wife and I decided to leave our rented home behind and move into a 40-foot RV. We spend our spring and summer in Alberta, Canada where she has a job for six months of the year working as an addictions counselor. The […]
Androkavo tests some of the cheap eBay solder against the brand-name stuff; it gets there in the end, but it’s surely not the advertized 60/40 alloy and needs to be close to 400° before it behaves itself.
MIT Tech Review's Antonio Regalado rounds up the year's stupidest, worst moments in tech, from the guy who created his own CRISPR-based gene therapy to beef up his muscles and injected it to Donald Trump's Twitter feed to the FCC's Net Neutrality catastrophe. Of course, Juicero rates a mention.
The Nintendo Switch is king when it comes to gaming on the go, but it’s tough to lose yourself in Zelda: Breath of the Wild or Skyrim if your battery dies out. That’s where this Nintendo Switch Battery Charger Case comes into play. Built exclusively for Nintendo Switch, this pack allows for uninterrupted charging while you play, […]
Creative designers play a pivotal role in engaging target audiences and customers, and while companies are eager to bring more of these professionals on board, you’ll have a hard time getting your foot in the door if you’re not using the industry’s best tools. From Adobe to Maya, the eduCBA Design & Multimedia Lifetime Subscription Bundle […]
As more companies aim to reel in costs and boost productivity, project managers are becoming an essential part of many operations, and they’re paid handsomely for their expertise. But, while demand is high, you’ll have a hard time getting your foot in the door if you’re not toting the right certifications. The Official Lean Six Sigma […]