People who read live longer than those who don’t, Yale researchers say
The benefits of reading should not be understated, even when it comes to living a longer life. A new study finds that reading books in particular returns cognitive gains that increase longevity.
Bookworms rejoice! A new study in the journal Social Science and Medicine just discovered that people who read books live longer than people who don't.
Researchers at Yale University asked 3,635 participants over 50 years-old about their reading habits. From that data, they split the cohort into 3 groups: non-readers, people who read less than 3.5 hours per week, and people who read more than 3.5 hours per week. The researchers followed up with each group for 12 years. The people who read the most were college-educated women in the higher-income group.
Over the course of the study, the researchers consistently found that both groups of readers lived longer than the non-readers. The readers who read over 3.5 hours a week lived a full 23 months longer than the people who didn't read at all. That extended lifespan applied to all reading participants, regardless of "gender, wealth, education or health" factors, the study explains. That's a 20% reduction in mortality created by a sedentary activity. That's a big deal, and a very easy fix for improving quality of life in anyone over 50.
Credit: Social Science and Medicine
The results get better. “Compared to non-book readers," the authors continue, “book readers had a 4-month survival advantage," at the age when 20% of their peers passed away. “Book readers also experienced a 20% reduction in risk of mortality over the 12 years of follow up compared to non-book readers." The authors continue:
"Further, our analyses demonstrated that any level of book reading gave a significantly stronger survival advantage than reading periodicals. This is a novel finding, as previous studies did not compare types of reading material; it indicates that book reading rather than reading in general is driving a survival advantage."
The reason books had greater gains than periodicals is because book reading involves more cognitive faculties. The readers didn't begin with higher cognitive faculties than the non-readers; they simply engaged in the activity of reading, which heightened those faculties. “This finding suggests that reading books provide a survival advantage due to the immersive nature that helps maintain cognitive status," said the study's authors.
As any book lover knows, reading involves two major cognitive processes: deep reading, and emotional connection. Deep reading is a slow process where the reader engages with the book and seeks to understand it within its own context and within the context of the outside world. Emotional connection is where the reader empathizes with the characters, and that promotes social perception and emotional intelligence. Those cognitive processes were cited by the Yale team and used as markers for this study. While they apparently offer a survival advantage, “better health behaviors and reduced stress may explain this process [as well]," according to the study. Still, those cognitive benefits are real, as writer Nicholas Sparr explains:
All the data was self-reported via phone survey and it didn't really account for ebooks, but it's still encouraging. There are no real downsides to reading, other than making the time for it. But if you're not convinced and would rather have John Green teach you literature instead of reading the classics for yourself, philosopher and Yale University Dean Jeffrey Brenzel lays out 5 additional pro-reading benefits for you:
Dominique Crenn, the only female chef in America with three Michelin stars, joins Big Think Live this Thursday at 1pm ET.
Scientists discover the inner workings of an effect that will lead to a new generation of devices.
- Researchers discover a method of extracting previously unavailable information from superconductors.
- The study builds on a 19th-century discovery by physicist Edward Hall.
- The research promises to lead to a new generation of semiconductor materials and devices.
Credit: Gunawan/Nature magazine
The images and our best computer models don't agree.
A trio of intriguing galaxy clusters<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDQzNDA0OS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxNTkzNzUyOH0.0IRzkzvKsmPEHV-v1dqM1JIPhgE2W-UHx0COuB0qQnA/img.jpg?width=980" id="d69be" class="rm-shortcode" data-rm-shortcode-id="2d2664d9174369e0a06540cb3a3a9079" data-rm-shortcode-name="rebelmouse-image" />
The three galaxy clusters imaged for the study
Mapping dark matter<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="d904b585c806752f261e1215014691a6"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/fO0jO_a9uLA?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p>The assumption has been that the greater the lensing effect, the higher the concentration of dark matter.</p><p>As scientists analyzed the clusters' large-scale lensing — the massive arc and elongation visual effects produced by dark matter — they noticed areas of smaller-scale lensing within that larger distortion. The scientists interpret these as concentrations of dark matter within individual galaxies inside the clusters.</p><p>The researchers used spectrographic data from the VLT to determine the mass of these smaller lenses. <a href="https://www.oas.inaf.it/en/user/pietro.bergamini/" target="_blank" rel="noopener noreferrer">Pietro Bergamini</a> of the INAF-Observatory of Astrophysics and Space Science in Bologna, Italy explains, "The speed of the stars gave us an estimate of each individual galaxy's mass, including the amount of dark matter." The leader of the spectrographic aspect of the study was <a href="http://docente.unife.it/docenti-en/piero.rosati1/curriculum?set_language=en" target="_blank">Piero Rosati</a> of the Università degli Studi di Ferrara, Italy who recalls, "the data from Hubble and the VLT provided excellent synergy. We were able to associate the galaxies with each cluster and estimate their distances." </p><p>This work allowed the team to develop a thoroughly calibrated, high-resolution map of dark matter concentrations throughout the three clusters.</p>
But the models say...<p>However, when the researchers compared their map to the concentrations of dark matter computer models predicted for galaxies bearing the same general characteristics, something was <em>way</em> off. Some small-scale areas of the map had 10 times the amount of lensing — and presumably 10 times the amount of dark matter — than the model predicted.</p><p>"The results of these analyses further demonstrate how observations and numerical simulations go hand in hand," notes one team member, <a href="https://nena12276.wixsite.com/elenarasia" target="_blank">Elena Rasia</a> of the INAF-Astronomical Observatory of Trieste, Italy. Another, <a href="http://adlibitum.oats.inaf.it/borgani/" target="_blank" rel="noopener noreferrer">Stefano Borgani</a> of the Università degli Studi di Trieste, Italy, adds that "with advanced cosmological simulations, we can match the quality of observations analyzed in our paper, permitting detailed comparisons like never before."</p><p>"We have done a lot of testing of the data in this study," Meneghetti says, "and we are sure that this mismatch indicates that some physical ingredient is missing either from the simulations or from our understanding of the nature of dark matter." <a href="https://physics.yale.edu/people/priyamvada-natarajan" target="_blank">Priyamvada Natarajan</a> of Yale University in Connecticut agrees: "There's a feature of the real Universe that we are simply not capturing in our current theoretical models."</p><p>Given that any theory in science lasts only until a better one comes along, Natarajan views the discrepancy as an opportunity, saying, "this could signal a gap in our current understanding of the nature of dark matter and its properties, as these exquisite data have permitted us to probe the detailed distribution of dark matter on the smallest scales."</p><p>At this point, it's unclear exactly what the conflict signifies. Do these smaller areas have unexpectedly high concentrations of dark matter? Or can dark matter, under certain currently unknown conditions, produce a tenfold increase in lensing beyond what we've been expecting, breaking the assumption that more lensing means more dark matter?</p><p>Obviously, the scientific community has barely begun to understand this mystery.</p>
Scientists have found evidence of hot springs near sites where ancient hominids settled, long before the control of fire.