Ever wonder why the thought of giving a talk at work makes you sweat? Panicking before a performance may seem like a major nuisance in the modern world. But it’s all part of the fight-or-flight response, which has hardwired itself into our brains through millions of years of evolution.
A study published in this week's issue of Nature sheds new light on why pot makes you really really hungry – even when you should feel full.
Each year in the United States, 2.5 million people will visit the ER for traumatic head injury. Of them, 50,000 will die. And those who do recover often exhibit lingering effects. It's a serious public health issue that's only getting worse. Here's what you need to know about protecting your head.
The most striking aspects of the new head-trauma study of former NFL players published in JAMA Neurology are not the formal findings per se. In many ways, those merely quantify and validate suspicions that even casual fans likely hold. The rub is that 40 percent of the retired players that researchers in Texas…