The Silent Epidemic Sleep is one of the most fundamental biological needs a human being has. Yet across the industrialized world, it is also...

The Silent Epidemic

Sleep is one of the most fundamental biological needs a human being has. Yet across the industrialized world, it is also one of the most consistently sacrificed. The Centers for Disease Control and Prevention reports that more than one in three adults in the United States does not get the recommended seven to nine hours of sleep per night. Globally, up to 45% of the population is affected. The World Finance journal describes this as a "public health epidemic," not metaphorically, but in terms of its measurable impact on individual health, cognitive function, and national economies.

The consequences of chronic sleep deprivation extend far beyond tiredness. Research published in The Lancet Public Health confirms that moderate sleep loss produces cognitive and motor impairments comparable to legally defined levels of alcohol intoxication. The brain's capacity for planning, problem-solving, and creative thinking is significantly reduced after even one night of restricted sleep. Over time, insufficient sleep is strongly associated with increased risk of obesity, cardiovascular disease, and depression, conditions that place an enormous burden on public health systems worldwide.

The economic scale of this problem is equally striking. A RAND Corporation analysis estimated that sleep deprivation costs the United States approximately $400 billion per year in lost productivity, with similar figures recorded across Japan and Germany. Sleep-related workplace absence accounts for tens of millions of lost working hours annually across these nations alone. What is often framed as a personal lifestyle issue is, in measurable economic terms, a structural problem with consequences that reach far beyond the bedroom.

What makes this epidemic particularly difficult to address is its cultural dimension. In many societies, sleeping less is still implicitly equated with working harder, a sign of dedication rather than poor health management. Until this cognitive framing is challenged at a societal level, the structural conditions driving sleep deprivation will remain largely intact, regardless of how many sleep-tracking devices the market produces.

[Adapted from https://www.cdc.gov/sleep/data-research/facts-stats/index.html]

Question 23: Which of the following is NOT mentioned in paragraph 1 as a justification for calling sleep deprivation a "public health epidemic"?

A. Its profound influence on the psychological and intellectual abilities of individuals.

B. Its significant and measurable repercussions on the financial stability of nations.

C. The fact that it affects nearly half of the global population at some level.

D. The rapid spread of biological pathogens caused by poor sleep hygiene in adults.

Question 24: The word "comparable" in paragraph 2 is closest in meaning to __________.

A. complete        B. suitable        C. consistent        D. similar

Question 25: Based on paragraph 2, what can be concluded about the cognitive impact of insufficient sleep?

A. Chronic sleep loss is less detrimental to motor skills than legal alcohol consumption.

B. Creative thinking remains largely unaffected unless sleep is restricted for several consecutive nights.

C. Even a single night of sleep restriction can diminish the brain's executive functions.

D. Motor impairments are only observed when sleep loss is coupled with physical exhaustion.

Question 26: The word "this" in paragraph 3 refers to __________.

A. personal lifestyle issue                        B. striking economic scale

C. sleep-related workplace absence        D. lost productivity in the US

Question 27: The word "intact" in paragraph 4 is OPPOSITE in meaning to __________.

A. preserved        B. reinforced        C. maintained        D. undermined

Question 28: Which of the following best paraphrases the underlined sentence in paragraph 4: “In many societies, sleeping less is still implicitly equated with working harder, a sign of dedication rather than poor health management.”?

A. By no means is sleep deprivation viewed as a failure of health oversight in various cultures; rather, it is hailed as a testament to one's professional industry.

B. Such is the prevalence of this cultural mindset that insufficient rest is frequently misinterpreted as a mark of diligence instead of a lapse in personal well-being.

C. Rarely do modern communities recognize the mismanagement of health inherent in restricted sleep, so long as such behavior remains a prerequisite for showing dedication.

D. Far from being seen as a mismanagement of health, a curtailed sleep schedule is tacitly perceived across numerous communities as an embodiment of perseverance.

Question 29: In which paragraph does the author discuss the limitations of technological solutions in addressing the root causes of sleep deprivation?

A. Paragraph 1        B. Paragraph 2        C. Paragraph 3        D. Paragraph 4

Question 30: In which paragraph does the author suggest that sleep deprivation is a systemic issue rather than just an individual choice?

A. Paragraph 1        B. Paragraph 2        C. Paragraph 3        D. Paragraph 4