Topic phenomenon of the longevity Among various factors that contribute to today's longevity of people are three most obvious ones: the improvement of food conditions, the development of modern medical technology, and finally current stability of economy in our country Food conditions are better than before and are still being developed with a rapid pace First of all, foods are more hygienic People today drink untainted mineral water, sterilized skim milk, which are cheaply supplied in supermarkets Furthermore, foods are more nutrient Not to mention various carefully designed nutrient products, people can just ignore the possibility of being dystrophic, in that they can keep nutrient balance by simply taking a cheap pill of vitamin compound every day Another essential improvement that contributes to people's longevity is swiftly developing medical technology Development of modern technology has always been amazing Certain diseases such as tuberculosis, pneumonia, and dysentery are now easy to remedy with low expenses, but in the past, they are all probably lethal ones The dental technology seems developed little except its exorbitantly charged bill, yet the simplest technology contributes to people's longevity most It is not difficult to imagine that if an individual who lived in the past got a toothache, without certain dental care which is common today, he was certainly in an awful prospect: he might even die of a toothache! Current societal and economic stabilization is also a very indispensable factor People have less pressure in a more stable society, the less pressure they suffer, the healthier they are Today's ideal stabilization even provides people an opportunity to secure their future? buy insurances Various types of insurances are readily available, which make people feel safe, and have to a large extent reduced people' anxieties, and therefore indirectly contribute significantly to longevity of people