Yahoo! Finance - While getting shots or blood work isn't anyone's idea of fun, roughly 10 to 20 percent of American adults suffer from trypanophobia, the extreme fear of hypodermic needles and injections. This phobia can prevent people from partaking in routine medical exams, receiving life-saving vaccines or even properly managing their blood-glucose levels (should they suffer from diabetes).
"So, actually, needle-free injection disperses better than regular injection when you just deposit a single blob through a needle and syringe," Jeremy Marston, a professor in the Department of Chemical Engineering at Texas Tech, told Texas Tech Today. "It disperses better and is absorbed slightly more slowly, so it may be preferred by some patients."