Those who tend to stay up late and sleep well past sunrise are at increased risk of early death, a new study from the United Kingdom suggests. The research, which involved nearly half a million people, found that self-described "evening people" were 10 percent more likely to die over a 6.5-year period, compared with self-described "morning" people. The effort to bridge the misalignment between an "evening" person's internal clock, or circadian rhythm, and the socially imposed timing of work and other activities increases his vulnerability.
Which of the following, if true, lends credence to the research given in the argument above?The study claims evening people have a higher death rate, and it suggests a mechanism: their internal clock clashes with social schedules, which increases vulnerability. The strongest support is evidence of a plausible pathway that makes
higher mortality more likely for evening people.
A. The benefits of going to bed on time range from helping one get rid of sleeplessness to boosting one's metabolism.
This is general and does not specifically connect evening people to higher death risk, or to the mismatch mechanism.
B. People who stay up late are more likely to come up with creative solutions to a problem than those who wake up early.
Creativity has no clear link to death risk or to the circadian mismatch explanation.
C. Getting too little sleep and eating one's meals hastily without chewing the food properly is a known cause of fatal heart attacks.
This could matter only if we also knew evening people are more likely to sleep too little or eat hastily. As stated, it does not connect those behaviors to evening people, so it does not strongly support the research.
D. The diets of the evening people have been found to be healthier than those of the morning people.
This tends to go the other way. If evening people eat healthier, that would normally reduce health risk, so it does not lend credence to the claim that they die more.
E. Evening people are more likely to use alcohol or drugs to keep themselves alert through the traditional socially active day.
This directly supports the study’s idea of
increased vulnerability from trying to function on a schedule that fights their internal clock. If evening people compensate with alcohol or drugs, that is a credible mechanism for worse health outcomes and higher death risk.
Answer: (E)