As you probably are aware, the number of Americans who develop Type II diabetes has steadily increased over the past two decades. Many people have attributed the typical American diet to the increase, but now researchers from Lund University in Sweden are proclaiming that a poor diet isn't the only contributing factor to the development of Type II diabetes--a lack of sleep can also be a contributing factor, if you have the right combination of genes. Read the original article (link below) to find out about the complex interactions between the hormone melatonin, sleep and blood sugar levels. It really is interesting, and raises many questions for further research, such as do people who regularly deprive themselves of sleep, regardless of genomic composition, have a higher risk of developing type II diabetes? I am thinking specifically of my students when I ask this question, as AP and IB kids tend not to sleep a whole lot. Does this behavior put you at higher risk for developing this disease, regardless of how well you eat or how old you are?
Reading the article piqued my interest for a couple of reasons: I am a type II diabetic, and the sleep I get on a regular basis is not nearly what it should be. But did my lack of sleep directly contribute to my developing diabetes? In my opinion, probably, but it was not the only contributing factor (I know this for a fact!). Could I generalize the results of this study to fit my own personal situation? That's where this article becomes interesting.
You see, the researchers only studied people of European descent. Now, I am not of full European descent--my mother's family is part Apache Indian (my paternal grandfather was Apache), and my father's
family is a mixed bag of Irish and Mexican descent. I like to say I am a Heinz 57 varieties human being! It is well-known that Hispanics have a high rate of type II diabetes, as do African-Americans. So why were these two ethnic groups left out of this study? It should be noted that Sharon Moalem, author of the bestselling book Survival of the Sickest, has postulated that diabetes (type 1) developed as a response to subfreezing temperatures. And where did these people afflicted with Type 1 live? Yep, Europe.
Were people screened for Type 1 diabetes in any way? Was a thorough family history taken for each participant? Why were certain ethnic groups excluded? Was the group of people studied of a particular gender? Does the fact that this study only included certain people bias it in any way, and if so, how? Can a truly unbiased study on this same topic be designed, and how?
Posted by scienceguru on December 7, 2008
Tags bioethics, discuss, disease, research, science and society


Comments on specific paragraphs:
Click the
icon to the right of a paragraph
Comments on the page as a whole:
Click the
icon to the right of the page title (works the same as paragraphs)