Sexual frustration impairs the health of fruit flies and causes premature death, according to new research. Scientists found that male flies who were stimulated to mate but prevented from doing so, had their lives cut short by up to 40%. Those allowed to copulate not only lived longer but suffered less stress. The research is published in the Journal Science. In the experiment, the flies were put in close proximity to genetically modified males who had been altered to release female sex pheromones. Continue...