Throughout history, the human race has a strong desire for living longer. And this dream gradually comes true these days: People are living longer than their ancestors. How could they make it happen? I think there are there reasonable answers to the problem:
Firstly, there have been a lot of advancements in medical field. In recent years, scientists have taken big steps towards research on new medicine. As well, doctors have applied more effective treatments than ever before. Consequently, many diseases which were considered incurable now can be cured. Millions patiences were saved from almost certain death. For example: Tuberculosis was one of the most formidable diseases that killed many victims in the past but today it can be treated.
Secondly, the medicine price is much lower than before because pharmaceutical companies always try to manufacture cheaper medicine to attract new customers. On the other hand, people have a higher living standard, as well as making more money to pay their medicine bills. In fact, many of them have the medical insurance so they do not worry too much about the medicine price. In poor countries, the lower medicine price is a crucial factor which reduced medical costs considerably for needy people. For example: Aids patients in African are provided with free medicine that help them live for a very long time despite Aids is still incurable. It is obvious that expensive medicine would result in a sentence of death for poor patiences.
Thirdly, in recent years, the global medical systems have been improved to meet the health demand of people. Governments given their health policies more serious consideration. They have invested more money in health sector: building more hospitals, upgrading the facilities, as well as improving together the quality of health services. Moreover, authorities have enacted many health laws to offer benefits in society. For example: In US, ObamaCare allows Americans without health insurance to get coverage, as well as ensure that health care coverage is available to any US resident who cannot obtain quality heath care through their employer.