I think there are many causes which have permitted in the last years increase people’s life expectancy. I consider people are living longer thanks to government policies on public’s health and due in most part to the great medical and technological advances that have been made in the last decades.
Cures and immunizations against many diseases have been found. Research has provided valuable information about the human body and the human mind. Even "miracle" medicines have saved a lot of lives and there are new methods that have been developed to prevent and cure diseases that were unknown and unconceivable some years ago.
There are still unanswered questions and unsolved problems, but researchers, doctors, biologists, public health employees and many others are working to answer and solve these questions and problems. No one of us knows how long will it take to find a cure for cancer diseases or a solution to prevent heart diseases, for example; but I think scientists are closer to find a solution.
On the other hand, I consider this achievement in people’s health is partly a result of the activity of many private and public organizations in health all over the world, who have established policies and priorities in order to create personal and environmental health programs, pollution control, policies related to chronic and infectious diseases, a smoke-free society and people’s education.
Finally, I think many important things have been done in medical science which have contributed to people’s health, so now the live longer than in past times. In many ways, people of all ages and in every race have better health. We have achieved a very great progress in preventing disease and promoting health, but there’s still a great effort to do in such many areas as nutrition, child and adult health. I think life expectancy rates have increased substantially and people live longer basically due to progress in medical science and education in public health for everyone.