Life Expectancy

I believe the test did a fairly good job in asking questions; however, some questions I believe could have a better variety of answers that are somewhat more specific. Also, the test may not be designed for students in college who may have different activities than their "norm", but just over their college years.  I, for example, had a very healthy lifestyle until college, and who knows, I may return to that when I graduate.  There are a lot of different stresses in college involving deadlines, projects, exams, work, etc. that can inhibit a student from engaging in a moderately/very healthy lifestyle. I feel like this test would be better for adults who can consider themselves at some sort of consistent daily lifestyle.  

Genetics and Aging

The beginning of the article I found explains how many people believe that aging happens because of wear and tear on the body due to environmental factors; however, geneticists think of it as the body no longer producing products and components that when normally produced answer to normal the wear and tear on the body.  An example used was tooth degradation.  Many people think that teeth become subject to so many years of wear and tear that they start receding, or degrading.  What scientists believe is happening is that genetics play a role in this, as the teeth are completely normal throughout a person's lifetime and don't usually begin degrading before the person is a senior, and as everybody knows, people everywhere are always having teeth issues due to chipping, cavities, etc, but the main thing scientists want people to know is that even though those situations happen to people, there is some mechanism that is always regenerating new teeth tissue/components to cope with things that might happen to it; in seniors however, the mechanism of regeneration begins to slow and even halt, a mechanism that is strongly believed to be influenced by gene regulation.  Mechanisms like this that slow or stop regenerating components for regeneration usually have specific properties about their corresponding gene promoters that influence the regulation such as when it will be expressed, how often, where it will be, and when it will stop being expressed in a lifetime perspective.
There was also a reference in the article about mice, in which when setting the environment aside, still live about 30 times younger than humans, implying that there must be different genetic regulations among different species that regulates their corresponding biological clocks.
This is just a basic genetic intro to aging, and is a lot more complex than this, but for the purposes of this class, I believe this type of information is most relevant.