Medical care over the past century has improved dramatically. As a consequence, the world's population now has longer life expectancy, but it is this having a harmful effect in the world or is this a positive output. One issue with an older population is that it can create enormous demands on a nation's health service. As people live longer in their old age, the chances of them suffering from scrious illnesses increases. A negative view is that living longer does not necessarily bring happiness. By this I mean, an older person is unable to do many of the activities that they want to do, leading to the likelihood of depression and a deterioration in their physical health. There is also a positive side, which is elders can enjoy more with their families, grandparents with their grandchildren especially. Also, there is the fact that this people after having finish their working life they would be able to enjoy fully their retainment life as they live longer there is possibil...