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Late last month, I visited the California offices of Chegg, a higher education company that specializes in helping college students with everything from affordable textbook rentals to online tutoring. Lately, Chegg has committed to gaining a deeper understanding of another subject central to college students' lives: sleep. And as Chegg's CEO Dan Rosensweig and I began a conversation with an audience of Chegg employees, Dan shared the results of a new Chegg survey on the sleep habits of college students.
The survey's findings bring valuable data to a familiar problem: for an alarming number of students, college has been turned into one long training ground for burnout. The motto "sleep, grades, social life: pick two," or some version of this, can be heard on campuses across the country. The combination of academic pressures, social opportunities -- and for many, newfound freedoms and the resulting challenge of time management -- creates an environment where sleep doesn't get the respect it deserves.
So as thousands of young people across the country prepare to head off to college, here are a few findings from the Chegg study -- which surveyed 473 students from a mix of public and private colleges -- that I found most illuminating.
Most students know there is a link between sleeping and academic performance.
Over half of the respondents agreed or strongly agreed with the statement that students who do better in school probably get more sleep. (They're right, of course. A 2014 study by the University of St. Thomas in Minnesota showed that the effect of sleep deprivation on grades is roughly equivalent to binge drinking and drug use.)
And the vast majority of students want to get the sleep they need.
Fully 84 percent said 8 or more hours would be "ideal" on a school night.
But very few are meeting that goal.
Only 16 percent usually get 8 or more hours on a school night, with far more (79 percent) sleeping 5 to 7 hours a night.
Today's college students are constantly connected.
Students overwhelmingly cited time spent online and with electronic devices as significant obstacles to sleep. Asked to name the reasons that keep them from sleeping, 51 percent cited too much time online doing non-school related activities -- second only to having too much homework.
Even in bed.
A whopping 86 percent said they take their devices to bed with them -- for email, texting and other non-school activities. And 90 percent leave their phones on when they go to sleep.
The good news?
Chegg's survey found that most college students have plenty of free time each day (much of it, for better or worse, is spent online). So there's an opportunity for students to set aside some of that time for sleep, whether that means going to bed 30 minutes earlier or finding time during the day for a nap.
And the fact that so many students know how much sleep they should be getting, and are aware of how tethered they are to their devices, is at least a first step in changing habits. As more studies like this emerge -- and as I was researching The Sleep Revolution, I was struck by the sheer number of new studies adding to our understanding of sleep's vital role in every aspect of our lives -- people will be more equipped to make changes, even small ones, to help them get the sleep they need.
That's why HuffPost launched the Sleep Revolution College Tour, and why we continue to tell stories around sleep's impact on our lives -- everything from the military's rediscovery of sleep as an essential tool of judgment to the ways athletes increasingly view it as the ultimate performance enhancer. As we approach the start of another academic year, with all its possibilities, there's no better time than now to renew our relationship with sleep and savor all the benefits it brings.
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Agostino Scilla Scientist of the Day
Agostino Scilla, a Sicilian painter and naturalist, was born Aug. 10, 1629.
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The decrease in fishery productivity in Lake Tanganyika since the 1950s is a consequence of global warming rather than just overfishing, according to a new report from an international team of researchers. The team found that during the 1800s, the lake became warmer at the same time the abundance of fish began to decline. However, large-scale commercial fishing did not begin on Lake Tanganyika until the 1950s. The researchers say the new findings help illuminate why the lake's fisheries are foundering.
Image credit: Saskia Marijnissen, UNDP
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Julienne Stroeve of the National Snow and Ice Data Center at the University of Colorado, Boulder, and her research team stand near a marker (pyramid-shaped structure) used by aircraft to stay on course for the researchers' transect measurements. Stroeve's team measured temperatures and other variables at the snow/ice interface in Elson Lagoon in Barrow, Alaska. Field data collected by Stroeve's team was used to help validate models that predict the potential response of arctic ecosystems to environmental changes, and to validate satellite measurements and help identify variables that can be reliably retrieved from satellites. Because detailed field sampling of ice and snow conditions can only be conducted over limited distances, Stroeve's team also uses aircraft observations to characterize snow and ice conditions in arctic environments.
Image credit: Don Perovich, CRREL, Hanover, N.H.
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On July 28th, 2016, Hillary Clinton became the first woman to ever be nominated for president on a major party ticket in the United States. Her primary battle was hard-won against democratic socialist Bernie Sanders, who ran an insurgent campaign within the Democratic Party. He attempted to paint Clinton as a corrupt, corporate Democrat without the will or ability to work toward genuine political reform. He eventually endorsed Clinton for president and moved to nominate her by acclamation at the 2016 Democratic National Convention. But among his millions of followers, another candidate's name was beginning to circulate.
Dr. Jill Stein is a medical doctor and political activist who currently hails from Massachusetts. She graduated cum laude from Harvard University before going on to receive a degree from Harvard Medical School. Throughout the 1990s, she was known among environmentalists for her work fusing human health to environmental concerns. She also won the role of Town Meeting Seat in Lexington, Massachusetts in 2005 and was reelected to the seat once.
As Stein's influence grew, she earned the nomination of the Green Party and ran for President of the United States in 2012, garnering less than half of one percent of the popular vote and securing no electoral votes.
This year, once again the Green Party nominee, she hopes to change that through a populist appeal to Bernie Sanders voters. Stein laid the groundwork by essentially offering Bernie Sanders the option of running as the Green Party nominee in place of her when he lost to Clinton. It was a shrewd move, as she knew he was going to stick with Clinton. Her offer, combined with his rejection, would signal to less politically astute supporters that he wasn't serious about reform and caved to the Democratic machine.
Of course, this isn't even slightly true. Sanders dramatically altered the Democratic Party platform, which was a huge victory for his movement and would've been impossible had he defected to the Green Party before the election cycle was complete. Only through supporting the Democratic Party could he hope to see his reforms fully adopted during a Democratic administration, and he's shown himself willing to play ball, albeit begrudgingly.
Stein's plan to court left-wing voters disillusioned with the Democrats worked better than political watchers had anticipated. Her media stock rose as she engaged in pointed anti-Clinton rhetoric. In Stein's world, Hillary Clinton is irredeemably corrupt with an appetite for war and loathing for the environment. Never mind that Clinton's actual voting record doesn't support the caricature. Stein's barbs aren't meant to reveal truth, rather provoke. Her style is remarkably similar to Donald Trump in its vapidity. One of her nastiest tweets attacked Clinton as a mother.
Green Party pandering for media attention has begun to take a more dangerous turn as Stein winks at dangerous conspiracy theories. Her comments in seeming support of the anti-vaccination fringe raise alarm, especially because she's repeated variations of them in multiple settings.
Here's what Stein, a medical doctor, told the Washington Post:
“There were concerns among physicians about what the vaccination schedule meant, the toxic substances like mercury which used to be rampant in vaccines. There were real questions that needed to be addressed. I think some of them at least have been addressed. I don't know if all of them have been addressed.”
Notice the Trumpian ending. Stein just doesn't really know if vaccines are totally safe. This is disturbing stuff, given a trend of vaccine skepticism being promoted by medically illiterate celebrities and known fraudsters like Dr. Joseph Mercola, who's been repeatedly warned by the FDA over federal law violations.
Stein was directly asked about the Green Party stance on vaccinations in a Reddit AMA and replied, “I don't know if we have an ‘official' stance.” She then continued with a paragraph full of conspiratorial fear-mongering about regulatory agencies, a favorite target of the anti-science homeopathy and “alternative medicine” movements.
Recently, Stein went so far as to suggest wireless signals are bad for children's brains and punctuated her reckless statement with this alarmist soundbite: “We make guinea pigs out of whole populations and then we discover how many die.” (Apparently, for all Stein is vehemently against, casual references to animal testing doesn't make the list.)
The stunning lack of medical and scientific literacy, from a seasoned medical professional who certainly knows better, continues in her food policy. Her official platform states, “Label GMOs, and put a moratorium on GMOs and pesticides until they are proven safe.” This is absurd, as GMOs have been repeatedly found to be safe. There's zero serious scientific debate on this point, because the evidence is in and results are clear. GMO crops could save hundreds of thousands of children's lives in a single year. Stein is trying to stop their development to satisfy anti-science extremists.
Her non-medical pandering often dips into comical absurdity, such as the time she suggested appointing fugitive Edward Snowden to her Cabinet if she won the election. I'm all for principled whistle-blowing, but the idea of nominating a guy who leaked government secrets to the media as Secretary of Homeland Security seems beyond ridiculous. Pardoning Snowden is probably the right thing to do, installing him in the White House is just frightening.
Another chuckle-worthy nugget related to national security, taken from her platform: “Ban use of drone aircraft for assassination, bombing, and other offensive purposes.” That's the whole statement. Would she rather send manned aircraft and put more of our military in harm's way? She's not for disbanding the armed forces, so maybe that's the case. Hard to say when her platform is little more than a talking points cheat sheet.
The whole charade of Stein's media-driven candidacy covers the fact that the Green Party has no ground game. This is a one-candidate show, not a genuine reformist party working to change a system from the local level. Unlike the Libertarian Party, the Green Party doesn't hold a single state house seat. If this was a party sincere about its mission, it would be building infrastructure from the local level.
Instead, we have what amounts to a celebrity campaign seemingly designed to foil the Democrats. In a year where our democracy is threatened by a terrifying demagogue, the Green Party is revealing itself to be reckless and full of hot air. A vote for Jill Stein is a vote that doesn't go to the only candidate who can realistically defeat Donald Trump.
Liberals deserve better than Jill Stein. Luckily, with the assistance of Bernie Sanders, they already have the most progressive Democratic Party platform in history. Hillary Clinton may not be an ideological firebrand, but she listens to voters and makes serious policy proposals informed by their concerns. That's what a democratic leader does, and that's why she has my enthusiastic vote.
Jill Stein needs to head back to the drawing board and reevaluate her priorities.
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Scientists have long suspected that being overweight affects the brain. Now, a neuroimaging study from the University of Cambridge provides dramatic new evidence of how great the effects can be (Ronan et al., 2016).
The study, published in the journal Neurobiology of Aging, compared a group of people with a normal Body Mass Index (BMI) of 19.5 to an overweight and obese group with a BMI averaging 43.4. It found that “cerebral white matter volume in overweight and obese individuals was associated with a greater degree of atrophy, with maximal effects in middle-age.”
The biggest changes were seen in the brain's white matter, the tissue responsible for communicating information between regions of the brain. White matter makes up around half the volume of the brain, and it connects various regions of gray matter to coordinate their functions. It joins all four of the brain's lobes (frontal, temporal, parietal, and occipital) with each other, and with the emotional brain or limbic system in the center.
The researchers looked at the brains of 527 people aged 20 to 87. They found few differences in the brains of younger people. By age 50, however, the effects of obesity in the brain were dramatic, with the brain of an obese 50 year old, for instance, looking like the brain of a lean 60 year old.
Other studies have shown that obesity is associated with other diseases like diabetes, cancer, and heart disease. An examination of the lifespan differences found that obesity cuts 8 years off your lifespan. But when the effects of obesity-related diseases are factored in, the difference rises to 30 years (Grover et al., 2015).
One of the brain study's investigators, Professor Sadaf Farooqi of the Institute of Metabolic Science at Cambridge, says: “We don't yet know the implications of these changes in brain structure. Clearly, this must be a starting point for us to explore in more depth the effects of weight, diet and exercise on the brain and memory.”
This raises the intriguing question of whether weight loss can reverse the brain atrophy found in overweight people. One of the study's authors, professor Paul Fletcher of the Department of Psychiatry wonders “whether these changes could be reversible with weight loss, which may well be the case.”
While long term weight loss is elusive, with research showing that most dieters regain even more weight than they lost, there are several new studies demonstrating that it is possible. When emotional eating is successfully treated, not only do dieters maintain their new weight, they continue losing weight over time.
A study at Bond University found that using EFT or Emotional Freedom Techniques, a common treatment for psychological trauma, dieters lost an additional 11.1 lb over the course of the subsequent year (Stapleton, Sheldon et al., 2012; Stapleton, Bannatyne et al., 2016). Lead researcher, psychology professor Dr. Peta Stapleton, is now using neuroimaging to study the brains of these successful losers. This will provide clues as to whether the atrophy noted in the Cambridge study is reversible.
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