Berkeley
Why Losing Sleep is One of the Worst Things You Can Do To Your Body
When we’re in pain, we have a hard time sleeping. But how does poor sleep affect pain? For the first time, UC Berkeley scientists have answered that question by identifying neural glitches in the sleep-deprived brain that can intensify and prolong the agony of sickness and injury.
Their findings, published Jan. 28 in the Journal of Neuroscience, help explain the self-perpetuating cycles contributing to the overlapping global epidemics of sleep loss, chronic pain and even opioid addiction.
A 2015 National Sleep Foundation poll found that two in three chronic pain patients suffer from reoccurring sleep disruptions.
“If poor sleep intensifies our sensitivity to pain, as this study demonstrates, then sleep must be placed much closer to the center of patient care, especially in hospital wards,” said study senior author Matthew Walker, a UC Berkeley professor of neuroscience and psychology.
By applying uncomfortable levels of heat to the legs of two dozen healthy young adults — while scanning their brains — Walker and UC Berkeley Ph.D. student Adam Krause found that the neural mechanisms that pick up on pain signals, evaluate them and activate natural pain relief are disrupted when operating on insufficient sleep.
While researchers proved their hypothesis that sleep deprivation would increase pain sensitivity — as demonstrated by an amped-up response in the brain’s somatosensory cortex — what surprised them was ramped-down activity in the nucleus accumbens, a region of the brain’s reward circuitry that, among other functions, increases dopamine levels to relieve pain.
“Sleep loss not only amplifies the pain-sensing regions in the brain, but blocks the natural analgesia centers, too,” Walker said.
Another key brain region found to slow down in the sleep-deprived brain was the insula, which evaluates pain signals and places them in context to prepare the body to respond.
“This is a critical neural system that assesses and categorizes the pain signals and allows the body’s own natural painkillers to come to the rescue,” said Krause, lead author of the study and a doctoral student in Walker’s Center for Human Sleep Science lab at UC Berkeley.
To further test the sleep-pain connection in more common daily-life scenarios, researchers surveyed more than 230 adults of all ages nationwide via Amazon’s Mechanical Turk online marketplace.
Respondents were asked to report their nightly hours of sleep as well as their day-to-day pain levels over the course of a few days. The results showed that even minor shifts in their sleep and wake patterns were correlated with pain sensitivity changes.
“The results clearly show that even very subtle changes in nightly sleep — reductions that many of us think little of in terms of consequences — have a clear impact on your next-day pain burden,” Krause said.
For the experiment, researchers recruited 25 healthy young adults who did not suffer from sleep or pain disorders.
Because different people have different pain thresholds, researchers began by recording each study participant’s baseline pain threshold after a full night’s sleep. They did this by gradually increasing heat levels to the skin of each participant’s lower left leg while recording their brain activity in a functional Magnetic Resonance Imaging (fMRI) scanner.
Study participants rated their thermal pain on a scale of one to 10 and reported, on average, thermal discomfort at around 111 degrees Fahrenheit (roughly 44 degrees Celsius).
Then, having established each participant’s baseline pain sensitivity after a full night’s sleep, researchers were able to compare how that threshold changed by repeating the procedure on subjects after a sleepless night. They found that the vast majority of sleep-deprived subjects reported feeling pain sooner, at around 107 degrees Fahrenheit.
“Across the group, they were feeling discomfort at lower temperatures, which shows that their own sensitivity to pain had increased after inadequate sleep,” Krause said. “The injury is the same, but the difference is how the brain assesses the pain without sufficient sleep.”
Meanwhile, brain imaging after a sleepless night showed marked increases in activity in the somatosensory cortex and deactivation in the nucleus accumbens and insular cortex, signaling malfunctions in the neural mechanisms that manage physiological responses to painful stimuli.
“The optimistic takeaway here is that sleep is a natural analgesic that can help manage and lower pain,” said Walker, author of the bestseller “Why We Sleep. ““Yet ironically, one environment where people are in the most pain is the worst place for sleep — the noisy hospital ward.”
Walker’s goal is to work with hospitals to create more sleep-friendly inpatient facilities.
“Our findings suggest that patient care would be markedly improved, and hospital beds cleared sooner, if uninterrupted sleep were embraced as an integral component of healthcare management,” he said
In addition to Walker and Krause, co-authors of the study are Aric Prather at the University of California, San Francisco; Tor Wager at the University of Colorado Boulder; and Martin Lindquist at Johns Hopkins University in Maryland.
Activism
Black Repertory Group Needs Volunteers to Help Shape the Next Generation of Artists and Leaders
Legendary performers such as Whoopi Goldberg and Danny Glover worked with and were inspired by BRG’s founders. More recently, Grammy award-winning artist Kehlani attended the Black Repertory Group Summer Day Camp for several years.
By Sean Vaughn Scott, Special to The Post
For more than 60 years, the Black Repertory Group (BRG) has changed lives through the arts.
Founded in 1964 by educators and visionaries Birel L. Vaughn and Nora Vaughn, BRG has become one of America’s oldest continuously operating Black theater institutions. For generations, it has preserved culture, developed talent, and provided opportunities for young people to discover their voices and their potential.
The results speak for themselves.
Legendary performers such as Whoopi Goldberg and Danny Glover worked with and were inspired by BRG’s founders. More recently, Grammy award-winning artist Kehlani attended the Black Repertory Group Summer Day Camp for several years.
Long before international recognition, Kehlani performed on the BRG stage. During a summer day camp production of “Princess and da Frog,” she portrayed Ray, the lovable firefly whose light guided others through the darkness. Her journey is proof that today’s camper may become tomorrow’s artist, entrepreneur, educator, or leader.
Located at 3201 Adeline St. in Berkeley, BRG continues that mission through its Youth Summer Day Camp of the Arts.
BRG is currently accepting applications and maintains an open enrollment program. Students may enroll throughout the summer as space permits and immediately become part of the BRG family.
We are also proud to be a multicultural opportunity program, welcoming children and families from all backgrounds, cultures, and communities. Through theater, music, dance, public speaking, visual arts, technical theater, and leadership development, students gain confidence, discipline, creativity, and lifelong skills.
As our programs grow, so does our need for volunteers.
We are seeking community members to assist with youth mentoring, registration, costumes, set construction, painting, props, ushering, photography, social media, marketing, technical theater, and fundraising activities. Whether you volunteer for a few hours or throughout the season, your support directly impacts the lives of young people.
BRG also partners with churches, civic organizations, alumni associations, fraternities, sororities, and community groups through theater party fundraisers, group sales, and buy-out performances. These partnerships have helped organizations raise funds while supporting arts and cultural programming.
The theater also serves as the home of the Berkeley NAACP Chapter, which meets every second Saturday of the month from 1 to 3 p.m.
For more than six decades, the Black Repertory Group has remained committed to one belief: every child deserves an opportunity to shine.
The next great artist may already be among us.
The next Kehlani may already be walking through our doors.
We invite you to volunteer, enroll, participate, and become part of the legacy.
For more information please go to www.blackrepertorygroup.com, call (510) 652-2120, or email info@blackrepertorygroup.com
Sean Vaughn Scott is the director of the Black Repertory Group.
Bay Area
UC Berkeley Named Top Public University in the U.S. and No. 7 in the World by ‘U.S. News’
Berkeley has been consistently awarded the distinction of the U.S.’s top public university since the Best Global Universities list was first published in 2014. “A strong position in the Best Global Universities rankings recognizes a school’s profound commitment to world-class research and cross-border academic excellence,” said LaMont Jones, managing editor for education at U.S. News.
The 2026 Best Global Universities rankings evaluated 2,250 research institutions from more than 100 countries
By Lila Thulin
U.S. News & World Report has ranked UC Berkeley No. 7 in its 2026 list of the best global universities, which assesses more than 2,250 research institutions worldwide.
Berkeley also claimed the honor of top public university in the U.S.
Released on Monday, the list evaluates universities from more than 100 countries on 13 metrics such as global and research reputation (as reported by academics and peers) and number of highly cited scholarly papers.
Berkeley has been consistently awarded the distinction of the U.S.’s top public university since the Best Global Universities list was first published in 2014.
“A strong position in the Best Global Universities rankings recognizes a school’s profound commitment to world-class research and cross-border academic excellence,” said LaMont Jones, managing editor for education at U.S. News.
The rankings also assess a university’s strength in various subject areas; these assessments are separate from U.S. News’ 2026 Best Graduate Programs rankings released in April.
This year, Berkeley was named in the top three nationally in seven subject areas – environment/ecology, ecology, water resources, physics, computer science, chemistry, and engineering – and in the top five for a total of 17 subjects. Subject rankings are based heavily on scholarly publications and citations as well as reputation.
In September, U.S. News also released its 2026 Best Colleges list, in which Berkeley was also named the No. 1 public institution among American universities.
That honor joins other accolades judging campus to be the best public university in the country, such as those from Forbes, The Wall Street Journal and Times Higher Education.
Arts and Culture
Farwest Region Deltas Celebrate Centennial With “September Breakfast” Honoring Vivian Osborne Marsh
The region was established in 1925 under the leadership of Vivian Osborne Marsh, who became its first Regional Director. Marsh was a pioneering scholar and civic leader, earning recognition as the first Black woman to receive both a bachelor’s and a master’s degree in anthropology from UC Berkeley.
By Antoinette Porter
Hundreds of members of Delta Sigma Theta Sorority, Inc., and their guests gathered at the Martin Luther King Jr. Student Union at the University of California, Berkeley, to mark the 100th anniversary of the sorority’s Farwest Region.
The region was established in 1925 under the leadership of Vivian Osborne Marsh, who became its first Regional Director. Marsh was a pioneering scholar and civic leader, earning recognition as the first Black woman to receive both a bachelor’s and a master’s degree in anthropology from UC Berkeley.
Marsh went on to serve as Delta Sigma Theta’s 7th National President, where she launched the sorority’s National Library Project to expand access to books in underserved Black communities in the South. During her presidency, the organization also became a prominent voice in the civil rights movement, lobbying Congress to pass anti-lynching legislation.
Bak in the Bay Area, Marsh devoted her career to advancing educational opportunities, mentoring young people, and strengthening community life. That commitment continues to shape the region, which supports initiatives in education, social justice, and economic development. Current projects include raising scholarship funds for students at Historically Black Colleges and Universities, voter education campaigns, and health and wellness programs.
A century after its founding, the Farwest Region of Delta Sigma Theta remains active across California and other western states, carrying forward Marsh’s vision of service and advocacy.
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