Vitamin C in pears is a cardiovascular protector and a healthy element for heart patients. November 21, 2009, the U.S. biological scientists mantles. Laubus research results show that unripe or half-ripe pears, with the role of radiation protection, pear ripening requires a lot of sunlight, can effectively absorb the sun's rays, recently, the United States Silicon Valley decimal office has been the pear as the main items of radiation protection, they believe that the pear radiation protection effect is far greater than cactus and aloe vera, and more beautiful than the prickly cactus. Its taste is sweet and sour and flat, non-toxic, with the efficacy of the body to produce fluids to quench thirst, benefit the spleen to stop diarrhea, and the stomach to lower the inversion of the efficacy of the stomach. People who eat more pears are far less likely to catch a cold than those who don't eat pears or eat less pears. Therefore, some scientists and physicians called the pear "all-round health fruit" or "general practitioner". Now air pollution is more serious, eat more pears can improve the respiratory system and lung function, to protect the lungs from the impact of airborne dust and soot.