News Main Animals Archaeology Dinosaurs Earth History Human Animal Space Tech   iStockPhoto |   Weather, a Factor A survey of 7,054 patients admitted to emergency rooms in the Boston, Mass. area found for every 5 degree Centigrade (9 degrees Fahrenheit) increase in temperature, both migraine and non-migraine headache risk went up 7.5 percent over the next 24 hours. And for every 5 millimeters (.20 inches) of mercury drop in pressure, there was also a 6 percent increase in headache risk. | Discovery News Video   « back to article

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