Wednesday, December 3, 2014

Bad Sleeping Habits and Shrinking Brains

College is a time where sleep can be minimal. Whether it is cramming for a big exam or choosing to hang out with friends, sleep can get pushed aside for these social or necessary academic events. While humans obviously need sleep to function and stay healthy, it’s not always our first priority. This study grabbed my attention because of the lack of sleep that comes with being in college and the insomnia problems within my own family. The following is a summary of the study published this year in the journal, Neurology.

Researchers in Norway recruited 147 Norwegian citizens to participate in this study. Participants were between the ages of 20 and 84 years old. Researchers were testing whether poor sleeping habits correlated with cortical atrophy. On their first visit, participants were given an MRI scan. Then around 3.5 years later they were invited back for another MRI scan. At the second visit, researchers administered a couple of questionnaires to participants such as the Pittsburgh Sleep Quality Inventory and a physical activity questionnaire. Their findings were interesting. Researchers found that poor sleep quality, which includes sleep latency, duration, and efficiency, does in fact correlate with cortical atrophy. The right superior frontal lobe decreased in size and the rate of atrophy increased in the frontal, temporal, and parietal lobes. The rate of atrophy increased with age as well with adults over sixty being more susceptible. The amount of physical activity of an individual had no effect on the results of the study.

The question that researchers still have is what causes what.  A correlation between these two variables was established, not a cause and effect relationship. Researchers are interested in knowing if brain atrophy is causing poor sleep quality, poor sleep quality is causing brain atrophy, or if there is a third, confounding variable. For example, psychiatric or neurodegenerative diseases can have an effect. It would be interesting to see further research conducted on this topic and the authors of the article state that sleep interventions need to be developed to help prevent cortical atrophy especially in older adults.  


https://www.aan.com/PressRoom/home/PressRelease/1305

1 comment:

  1. This article caught my attention because I feel like it can apply to just about every college student. It is especially interesting to me because it makes me wonder if there are hypocritical expectations that go along with being a college student. We are expected to push our limits in college: find ourselves, discover our passions, work to the best of our abilities all while getting minimal sleep for 4 years. If research has proved results of cortical atrophy only after 3.5 years, what kind of damage could there be throughout a lifetime? Are we really just working in the present to be smarter just to be dumber in the future? Are the high expectations set in college jeopardizing our real potentials in regards to careers and overall health in the future? In my opinion, these results are probably not as extreme as the article is claiming, but it is definitely something to think about. Maybe we SHOULD be putting sleep above some college things....

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