Amanda Leigh Mascarelli's Articles
- Electronic cigarettes were originally advertised as a way for smokers to wean themselves off of cigarettes. In fact, e-cigarettes are helping hook a whole new generation of young people on nicotine — an addiction that may transition back to tobacco.
- Many teens are turning to water pipes as a potentially safer alternative to conventional cigarettes. But they’d be wrong.
- New battery-powered devices deliver nicotine, a dangerous and addictive drug.
- Why is granny so forgetful? Scientists must learn how the brain builds memories if they hope to figure out why recall fails in old age.
- The misuse of these ADHD medicines not only constitutes cheating, but they can become addictive and can mess with your head.
Researchers don’t fully understand how the body’s internal clocks coordinate. But they do know your body will notice when its circadian rhythms are mismatched to the time zone they’re in.
“There are a lot of different hormones and other systems in the body that under normal situations are internally synchronized,” says Shawn Youngstedt. He studies circadian rhythms at the University of South Carolina in Columbia. The body clock times when those chemicals are released to orchestrate biological activities. Crossing a lot of time zones can jumble these systems. Hormones and the activities they direct may now operate at inappropriate times.