Recent advances in medicine have resulted in an increase in life expectancy over the past four years. What do you think are the advantages and disadvantages?

Recent advances in medicine have resulted in an increase in life expectancy over the past four years. What do you think are the advantages and disadvantages?
Not only fresh air or proper nutrition provide to be a good condition, but also thanks to, achieving high successes in a modern medicine in a few years, has helped to people in live a longer life. I believe that, there are benefits and drawbacks as well. I guess it has more beneficial aspects rather than disadvantageous.
We can see that in the past people’s middle age was about forty or fifty and if we are look at these days of society, it has increased till sixty to seventy and all of these progresses are due to enhancing in rapid rate medicine. One of the reasons of why humans who lived in the past dying too young is to be serious disease which in that time nation cannot treat, on the contrary today thanks to strong medicine a number of diseases find their own remedies.
There is a saying that, a coin has two sides. Almost every achievement has their own price. In our circumstances is that for researching treatments for disease requires a lot of approaches and for examine these attempts they sacrifice such animals’ kind of dogs, monkeys and especially mouses. I think, those sacrifices were not in vain. In light of the fact that we gain cure for the majority of illness using these methods.
In conclusion, I would say that, no matter how many disadvantages there are, because of developed medicine we can live in life which where people live without worry from kind of viruses.