Headache | featured news

Everyone knows stress can cause headaches and sleepless nights. But a new study suggests it can actually shrink your brain.

Presidential hopeful Michele Bachmann isn't alone when it comes to suffering from migraines.

From Hollywood studios to Japanese TV makers, powerful business interests are betting 3-D will be the future of entertainment, despite a major drawback: It makes millions of people uncomfortable or sick.Optometrists say as many as one in four viewers have problems watching 3-D movies and TV, either because 3-D causes tiresome eyestrain or because the viewer has problems perceiving depth in real life. In the worst cases, 3-D makes people queasy, leaves them dizzy or gives them headaches.

Mind-numbing headaches are more likely to strike as the mercury rises, a recent Harvard University study says. But the heat may not be the only perpetrator at play.