health

The effects of smoking have been well documented. Heart disease and emphysema, lung cancer and yellow teeth; the list seems to go on forever. Well, add one more to that list: enhanced memory. A new study conducted at King’s College in London indicates that the addictive and highly toxic chemical nicotine might improve memory and stave off the onset of dementia.

Health risks for the 21st century worker keep getting weirder. Researchers at North Carolina State University have found that quantum dots—nanoparticles made of semiconducting crystals that emit light when stimulated at certain wavelengths—can penetrate skin through abrasions.

Energy drinks like Monster, Full Throttle, Red Bull and others account for more than $3 billion in annual sales in the U.S., and roughly one-third of people between the ages of twelve and 24 say they suck them down on a regular basis. The beverages have been linked to a number of negative health effects, but now an addiction researcher at the University of Buffalo has published a report demonstrating that excessive consumption is also correlated to risky behavior such as unprotected sex, substance abuse and violence.

If inhaled, certain kinds of carbon nanotubes - the tiny technology used in a wide variety of applications - could increase an individual's risk of cancer, according to scientists. Researchers injected mice with nanotubes, and found that the super-strong fibers created the same sort of problems as asbestos.

The Alzheimers Association released a report yesterday with some frightening estimates regarding the future of the brain-wasting disease. One out of every eight baby boomers are likely to develop Alzheimers at some point, and the disease is now the seventh deadliest in the country.

By 2010, there will be 500,000 new cases each year. By 2050, that number will jump to a million. This means the costs of caring for these patients are, naturally, going to jump dramatically.

Move over cheddar. Its time for something hairier…er, healthier. Researchers in Nepal and Canada are reporting [PDF] that yak cheese has higher levels of several healthy fatty acids than the stuff derived from dairy cattle.

Pop this pill, and eight hours later, doctors can examine a high-resolution video of your intestines for tumors and other problems, thanks to a new spinning camera that captures images in 360 degrees. Developed by the Japanese RF System Lab, the Sayaka endoscope capsule enters clinical trials in the U.S. this month.

When a pile of castor beans and a couple of vials of white powder turned up on Thursday in a room at the Extended Stay America Hotel near the Las Vegas strip, authorities went into panic mode, calling in police, Homeland Security and FBI agents to investigate.

Yesterday morning, 5 am: Oh s***. I'm done for. The viral infection so potent it fells healthy 20-somethings for a week at a time, the epidemic so ubiquitous in our New York offices that it's now referred to simply as the PopSci Plague, the flu that crushes your brain and blows it through your digestive tract has finally come for me. It is my time. I can feel it: A sore throat and vague headache that are the opening salvos of a dispiriting scorched-earth campaign. It's too late to fight.

Or is it?

This isnt quite a shocker, but scientists are reporting that people who are active during their leisure time look to be biologically younger than their channel- or web-surfing counterparts. The active folks have lower rates of plenty of the bad stuff diabetes, cancer, high blood pressure, etc. but the scientists add that their lifestyle might even influence the aging process itself.

Perspiration, however odiferous and uncomfortable, is good. Scientists at Germany's Tuebingen University have discovered an antimicrobial peptide -- a protein that protects the body against attacks from germs -- in human sweat. The new one, Dermcidin, is, according to co-discoverer Birgit Schittek,"the first one known to be produced continuously in the skin." Other types are produced only after injury or infection.