What are the factors to enable a longer life?With the development of human society, people are living longer now. Many factors interactingtogether enable the longer life. There are three most important causes: the quality of food has been greatlyimproved; people could have medical services; more and more people realize that regular sports benefit theirhealth.The improving quality of our food is the most important factor of the longer life. We could have notonly enough food as we want, but also the healthier food. When we preparing food, we no longer consider thecost, but pay more attention to the nutritions of the food. With the development of transportation systems,inland people now could also enjoy seafood and tropical fruit.Furthermore, governments are paying more and more money on medical establishments. Citizenscould have medical services more easily. Because of the convenient medical service more illnesses could bedetected at an earlier stage. Also, many illnesses that had been considered fatal could be cured today. Thebetter detection and cures enable people's longer life.Last but not least important is that people care more for their own health. Every morning you couldsee people doing sports outside. More and more people have realized the saying "life is locomotion". Regularsports build up a strong body. Naturally, people with stronger body could resist more diseases.To sum up, the development of our society causes the longer life of people. People have better foodand better medical services. And people spend more time on sports to build up stronger bodies. As we couldpredict, people are going to live even longer.