A Chemical in Bed Bug Poop Might Be Making You Feel Sick

iStock
iStock

Bed bugs can give you nasty bites and a lifetime of nightmares, but scientists have long wondered if the creepy parasites can pass diseases to their hosts. For years, the general consensus was no: Unlike ticks, mosquitos, and other insects that are known to feast on human blood, bed bugs aren't packing any harmful pathogens in their bites. Yet according to a new study, spotted by Gizmodo, the bugs don't need to nibble on us to make us sick. Histamines in their poop might be aggravating our immune systems.

For their study, recently published in the journal PLOS One, scientists at North Carolina State University tested the dust in a bed bug-infested apartment complex. They found that samples from some infested homes had histamine levels 20 times higher than those without bed bugs. This was still the case three months after the buildings had been treated by exterminators.

Histamine is a chemical compound produced by our bodies. In small amounts, it works as a vital part of our immune system. It's activated in the presence of allergens, irritants, and pathogens. Say a puff of dust goes up your nose: Histamine is what prompts your body to sneeze it out. It's also the culprit behind the watery eyes, runny nose, and itchy skin you might experience during an allergy attack (which is why you might take an antihistamine to calm these symptoms).

But we're not alone in our ability to produce histamine. Recent research has shown that the chemical is present in bed bug feces. When the insects poop, they spray histamines into the same air that homeowners breathe. A few whiffs of the stuff is likely nothing to worry about, but scientists are concerned about the effects environmental histamine can have on people over an extended period of time. The chemical compound can cause allergic reactions on its own and possibly make us more vulnerable to existing allergens. The implications are especially serious for people with asthma.

"Dermal, nasal, or respiratory responses (e.g. bronchial reactivity) to histamine in clinical tests suggest that exposure to histamine in the environment would constitute a significant health risk, although information on environmental exposure is limited," the study authors write.

For now, scientists can do nothing but speculate on what these results might mean for public health. Humans are prepared to treat only histamine that's produced by our own bodies, and dealing with the effects on histamine spread by bed bugs is uncharted territory for doctors and scientists. How exactly bed bugs obtain the chemicals in the first place is also unclear, but researchers suspect that it's a combination of the blood they suck from us and histamine they make on their own as a type of pheromone, indicating to other bed bugs that a place is safe to invade.

Following this study, the North Carolina State scientists plan to conduct more intensive research on the impact histamine produced by bed bugs is having on the people who live with it. While the best way to eradicate histamine in bed bug poop is still a mystery, there are plenty of ways to deal with the bugs themselves if you suspect you have an infestation.

[h/t Gizmodo]

L’Oréal’s New Wearable Sensor Keeps Track of Your Daily UV Exposure

L'Oréal USA
L'Oréal USA

Anyone who has ever suffered a sunburn knows that too much exposure to UV radiation is bad for your skin. But in the moment, it can be hard to tell when you’ve gotten too much sun—especially during the winter, when you might not think you need sunscreen. (In reality, snow reflects up to 80 percent of the sun’s UV light, so you may end up getting hit with the same rays twice.) A new wearable sensor spotted by Wired aims to make understanding your sun exposure a whole lot easier.

L'Oréal’s new La Roche-Posay My Skin Track UV sensor pairs with a smartphone app to alert users when they’ve had high levels of UV exposure. Developed by L'Oréal’s Tech Incubator in collaboration with Northwestern University engineering professor John Rogers and Swiss designer Yves Béhar, the sensor measures UVA rays (which are associated with skin aging and skin cancer) and uses an algorithm to calculate UVB exposure (which is associated with sunburn and skin cancer).

The UV sensor
L'Oréal USA

At only half an inch tall and 1.3 inches long, the waterproof sensor is designed to be discreetly attached to your clothes, watchband, or sunglasses. The sensor's LED detector measures UV rays as sunlight passes through a small window in the device, then transfers the data to your phone via a near-field communication (the same technology in some hotel key cards). It stores the photons from the UV rays in a capacitor, eliminating the need for a battery.

Based on this data, the My Skin Track app can tell you how close you're getting to the maximum limit of UV exposure doctors recommend per day. It also provides updates about the air quality, pollen count, and humidity wherever you are at any given moment. Based on this information, as well as data about your specific skin type and skin tone, the app's Skin Advice feature will provide customized tips for keeping your skin healthy. It also recommends specific products—La Roche-Posay items can be bought directly through the app, should you desire.

The sensors are exclusively available through Apple stores. You can order one online for $59.95.

[h/t Wired]

Massive Salmonella Outbreak Linked to Raw Turkey Just Days Before Thanksgiving

iStock.com/kajakiki
iStock.com/kajakiki

The U.S. has been in the midst of a salmonella outbreak for more than a year, with the bacteria contaminating everything from cereal to snack foods as well as raw poultry. Now health experts warn that your Thanksgiving dinner may put you at risk for infection. As ABC reports, salmonella has been traced back to a number of turkey products, and Consumer Reports is urging the USDA to name the compromised brands ahead of the holiday.

The drug-resistant strain of salmonella linked to the recent outbreak has been detected in samples taken from live turkeys, raw turkey products, and turkey pet food, according to the Centers for Disease Control and Prevention (CDC). Since November 5, 2017, 164 people in 35 states have contracted the infection from a variety of products.

While many of the items linked to the salmonella outbreak have been pulled from shelves, the potentially contaminated turkey brands have yet to be identified. In a news release, Consumer Reports urged the USDA to release this information in time for consumers to do their Thanksgiving shopping.

"The USDA should immediately make public which turkey producers, suppliers, and brands are involved in this outbreak—especially with Thanksgiving right around the corner," Jean Halloran, director of food policy initiatives for Consumers Union (the policy department of Consumer Reports), said in a statement. "This information could save lives and help ensure consumers take the precautions needed to prevent anyone in their home from getting sick."

Even if specific brands aren't flagged before November 22, the CDC isn't telling consumers to skip the turkey altogether. Instead, home cooks are encouraged to practice the same safety precautions they normally would when preparing poultry. To avoid salmonella poisoning, start with a clean work area and utensils and wash your hands and counter thoroughly before and after preparing the bird. But skip washing the bird itself, as this can actually do more to spread around harmful pathogens.

Cook your turkey until the meatiest part reaches an internal temperature of 165°F. And if you're looking for a way to make sure the juiciest parts of the turkey cook through without drying out your white meat, consider cooking the parts separately.

[h/t ABC]

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