There is a very interesting life expectancy calculator available to you right now. The Living to 100 Life Expectancy Calculator determines your life expectancy, based upon your ancestry, diet, exercise, exposure to smoke (both primary and second-hand), and much more. The calculator is based on a poll of many centenarians. It compares your life and health history against those polled. I find this particular calculator to be interesting because it asks a number of questions about your ancestry. Apparently, if your parents and grandparents lived to a ripe old age, you have a better chance of doing the same.
Of course, modern medicine knows that your genetic inheritance is a major factor in how long you can expect to live; however, numerous other factors are also involved. This calculator also asks a lot about your lifestyle. I would strongly recommend that you take this quiz now and carefully study its findings. It could literally save your life. At a minimum, it will show you what you inherited from your ancestors, good or bad, as well as your own contributions to your expected golden years.
The Living to 100 Life Expectancy Calculator can be found at http://www.agingresearch.org/calculator.
I just completed the calculations there and have learned that it is time to get my act together or else get my personal affairs in order!